{"id":46672,"date":"2022-11-27T18:16:50","date_gmt":"2023-09-21T07:14:09","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/46672-2\/"},"modified":"2024-04-29T02:45:05","modified_gmt":"2024-04-28T18:45:05","slug":"46672-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/46672-2\/","title":{"rendered":""},"content":{"rendered":"<p>Clojure\u30a2\u30c9\u30d9\u30f3\u30c8\u30ab\u30ec\u30f3\u30c0\u30fc\u304c\u51fa\u308b\u3068\u4eca\u5e74\u3082\u7d42\u308f\u308a\u3060\u3068\u3044\u3046\u611f\u3058\u304c\u3067\u3066\u304d\u307e\u3059\u306d!\u7686\u69d8\u306b\u3068\u3063\u3066\u7d20\u6575\u306aClojure year\u3060\u3063\u305f\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u50d5\u306fClojure\u4ef2\u9593\u3068(dosync radio)\u3068\u3044\u3046podcast\u3092\u59cb\u3081\u305f\u308a\u3001Clojure\/conj\u306b\u53c2\u52a0\u3057\u3066\u30de\u30b5\u30ab\u30ea\u3092\u6295\u3052\u308b\u7df4\u7fd2\u3092\u3057\u305f\u306e\u304c\u30cf\u30a4\u30e9\u30a4\u30c8\u3067\u3057\u305f\u3002\u6765\u5e74\u3082\u958b\u50ac\u5730\u304c\u540c\u3058\u3060\u3063\u305f\u3089\u7686\u3067\u30de\u30b5\u30ab\u30ea\u6295\u3052\u306b\u884c\u304d\u307e\u3057\u3087\u3046\u3002<br \/>\n\u30de\u30b5\u30ab\u30ea\u4ee5\u5916\u3060\u3068\u4eca\u5e74\u306f\u4ed5\u4e8b\u3067Kafka\u3092\u3072\u305f\u3059\u3089\u4f7f\u3063\u3066\u3044\u305f\u306e\u3067\u3001\u81ea\u5206\u306e\u7406\u89e3\u3092\u6574\u7406\u3057\u3088\u3046\u3068\u3044\u3046\u52d5\u6a5f\u3067Kafka\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306e\u8a18\u4e8b\u306b\u767b\u5834\u3059\u308bsnippet\u3092\u66f8\u304d\u6563\u3089\u304b\u3057\u305f\u30ec\u30dd\u30b8\u30c8\u30ea\u306f\u3053\u3061\u3089\u3067\u3059\u3002<\/p>\n<h2>Kafka\u3068\u306f?<\/h2>\n<p>Apache Kafka\u81ea\u4f53\u306f\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u30d6\u30ed\u30fc\u30ab\u30fc\u3067\u3059\u3002\u30ab\u30bf\u30ed\u30b0\u7684\u306aspec\u306b\u3064\u3044\u3066\u306f\u3053\u306e\u8a18\u4e8b\u3067\u89e6\u308c\u306a\u3044\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u304c\u3001\u5f8c\u8ff0\u3059\u308bKafka Streams\u3068\u3044\u3046\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306e\u62bd\u8c61\u5316\u3092\u63d0\u4f9b\u3059\u308bJava\u30e9\u30a4\u30d6\u30e9\u30ea(= Clojure\u304b\u3089\u4f7f\u3048\u308b!)\u306e\u5b58\u5728\u304c\u4e16\u306b\u5b58\u5728\u3059\u308b\u305d\u306e\u4ed6\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30d6\u30ed\u30fc\u30ab\u30fc\u3068\u6bd4\u8f03\u3059\u308b\u969b\u306eKiller Feature\u3060\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30d6\u30ed\u30fc\u30ab\u30fc\u3092\u52d5\u304b\u3059<\/h2>\n<p>\u30d6\u30ed\u30fc\u30ab\u30fc\u3092\u52d5\u304b\u3055\u306a\u3044\u3053\u3068\u306b\u306f\u59cb\u307e\u308a\u307e\u305b\u3093\u3002<br \/>\n\u9078\u629e\u80a2\u3068\u3057\u3066\u306f<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">apache kafka\u63d0\u4f9b\u306etgz<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">confluent\u63d0\u4f9b\u306ezip\/tar<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">docker<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Confluent Platform\u3084AWS MSK, Cloud Karafka\u7b49\u306e\u30b5\u30fc\u30d3\u30b9<\/ul>\n<p>\u7b49\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>docker\u3067\u52d5\u304b\u3059\u5834\u5408\u306f\u540c\u4e00\u30db\u30b9\u30c8\u306edocker\u30b3\u30f3\u30c6\u30ca\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306badvertized.*\u306e\u8a2d\u5b9a\u306edocker\u30b3\u30f3\u30c6\u30ca\u306enetwork\u306e\u7406\u89e3\u304c\u5fc5\u89811\u3067\u96e3\u3057\u304b\u3063\u305f\u306e\u3067\u4ed5\u4e8b\u306e\u958b\u767a\u3067\u306f\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b\u306e\u30d6\u30ed\u30fc\u30ab\u30fc\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7d4c\u7531\u3067\u30a2\u30af\u30bb\u30b9\u3059\u308b\u65b9\u6cd5\u3092\u6700\u521d\u306b\u63a1\u7528\u3057\u3001\u73fe\u5728\u3067\u306f\u30ea\u30e2\u30fc\u30c8\u306ekubernetes\u30af\u30e9\u30b9\u30bf\u30c7\u30d7\u30ed\u30a4\u3055\u308c\u3066\u3044\u308bbroker\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u958b\u767a\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u30ed\u30fc\u30ab\u30eb\u3067Clojure\u3092\u52d5\u304b\u3059\u306e\u3067\u4e0a\u8a18\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u306a\u3044\u305f\u3081docker\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>Topic\u306e\u4f5c\u6210<\/h2>\n<p>\u3053\u3053\u304b\u3089\u3088\u3046\u3084\u304fClojure\u3067\u3059\u3002\u4e16\u306b\u306f\u65e2\u306bClojure Kafka\u30e9\u30c3\u30d1\u30fc\u304c\u591a\u6570\u5b58\u5728\u3057\u3066\u306f\u3044\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u81ea\u5206\u306e\u52c9\u5f37\u3092\u517c\u306d\u3066\u3044\u308b\u306e\u3067\u751fJava API\u3092\u53e9\u304d\u307e\u3059\u3002<\/p>\n<p>\u6700\u521d\u306bAdminClient\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u30c8\u30d4\u30c3\u30af\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002Partition\u306f\u540c\u6642\u306b\u52d5\u304b\u3057\u305f\u3044\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51e6\u7406\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6570\u306b\u3088\u3063\u3066\u6c7a\u3081\u307e\u3059\u3002\u4f8b\u3048\u3070partition\u6570\u304c10\u3067\u3042\u308c\u3070\u6700\u592710\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u5206\u6563\u51e6\u7406\u304c\u3067\u304d\u307e\u3059\u3002\u4eca\u56de\u306fbroker\u306f1\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3057\u304b\u306a\u3044\u306e\u3067replication factor\u306f1\u3067\u3059(2\u4ee5\u4e0a\u3092\u6307\u5b9a\u3059\u308b\u3068\u30a8\u30e9\u30fc)\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">;; deps.edn<\/span>\r\n<span class=\"p\">{<\/span><span class=\"no\">:deps<\/span> <span class=\"p\">{<\/span><span class=\"n\">org.apache.kafka\/kafka-clients<\/span> <span class=\"p\">{<\/span><span class=\"no\">:mvn\/version<\/span> <span class=\"s\">\"2.3.1\"<\/span><span class=\"p\">}}}<\/span>\r\n\r\n<span class=\"c1\">;; code<\/span>\r\n<span class=\"p\">(<\/span><span class=\"nb\">import<\/span> <span class=\"p\">[<\/span><span class=\"n\">org.apache.kafka.clients.admin<\/span> <span class=\"n\">AdminClient<\/span> <span class=\"n\">NewTopic<\/span><span class=\"p\">])<\/span>\r\n<span class=\"p\">(<\/span><span class=\"k\">def<\/span> <span class=\"n\">admin-clint<\/span> <span class=\"p\">(<\/span><span class=\"nf\">AdminClient\/create<\/span> <span class=\"p\">{<\/span><span class=\"s\">\"bootstrap.servers\"<\/span> <span class=\"s\">\"localhost:9092\"<\/span><span class=\"p\">}))<\/span>\r\n\r\n <span class=\"p\">(<\/span><span class=\"k\">let<\/span> <span class=\"p\">[<\/span><span class=\"n\">topic-name<\/span> <span class=\"s\">\"foo\"<\/span>\r\n        <span class=\"n\">partitions<\/span> <span class=\"mi\">8<\/span>\r\n        <span class=\"n\">replication-factor<\/span> <span class=\"mi\">1<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nb\">-&gt;<\/span> <span class=\"n\">admin-clint<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.createTopics<\/span> <span class=\"p\">[(<\/span><span class=\"nf\">NewTopic.<\/span> <span class=\"n\">topic-name<\/span> <span class=\"n\">partitions<\/span> <span class=\"n\">replication-factor<\/span><span class=\"p\">)])<\/span>\r\n        <span class=\"n\">.all<\/span>\r\n        <span class=\"n\">.get<\/span><span class=\"p\">))<\/span>\r\n<\/code><\/pre>\n<p>\u4f5c\u6210\u3057\u305f\u30c8\u30d4\u30c3\u30af\u306flistTopics\u30e1\u30bd\u30c3\u30c9\u306e\u7d50\u679c\u304b\u3089\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n  <span class=\"p\">(<\/span><span class=\"nf\">.get<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.names<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.listTopics<\/span> <span class=\"n\">admin-clint<\/span><span class=\"p\">)))<\/span>\r\n<span class=\"n\">=&gt;<\/span> <span class=\"o\">#<\/span><span class=\"p\">{<\/span><span class=\"s\">\"foo\"<\/span> <span class=\"s\">\"_confluent-metrics\"<\/span> <span class=\"s\">\"__confluent.support.metrics\"<\/span><span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u30d6\u30ed\u30fc\u30ab\u30fc\u5074\u3067\u30c8\u30d4\u30c3\u30af\u3092\u81ea\u52d5\u3067\u4f5c\u6210\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u672c\u756a\u3067\u52d5\u304b\u3059\u969b\u306b\u306f\u30c8\u30d4\u30c3\u30af\u306e\u8a2d\u5b9a\u3092\u518d\u73fe\u53ef\u80fd\u306b\u3059\u308b\u3079\u304d\u306a\u306e\u3067\u624b\u52d5\u3067\u4f5c\u6210\u3059\u308b\u65b9\u304c\u826f\u3044\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<h2>Produce<\/h2>\n<p>\u30c8\u30d4\u30c3\u30af\u3092\u4f5c\u6210\u3057\u305f\u3089\u3070\u30c8\u30d4\u30c3\u30af\u3078\u306e\u8aad\u307f\u66f8\u304d\u3092\u3084\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br \/>\n\u66f8\u304d\u8fbc\u307f\u306fProducer\u30af\u30e9\u30b9\u306esend\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002\u4e0b\u8a18\u306esnippet\u3067\u306f&#8221;topic&#8221;\u3068\u3044\u3046\u30c8\u30d4\u30c3\u30af\u306b&#8221;key&#8221;\u3068\u3044\u3046key\u3092\u3082\u3063\u305f&#8221;value&#8221;\u3068\u3044\u3046\u30ec\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001send\u306fFuture\u3092\u8fd4\u3059\u306e\u3067@\u3067deref\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u9001\u4fe1\u306e\u7d50\u679c\u3092\u540c\u671f\u7684\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"k\">def<\/span> <span class=\"n\">producer<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nf\">KafkaProducer.<\/span>\r\n     <span class=\"p\">{<\/span><span class=\"s\">\"bootstrap.servers\"<\/span> <span class=\"s\">\"localhost:9092\"<\/span>\r\n      <span class=\"s\">\"key.serializer\"<\/span> <span class=\"s\">\"org.apache.kafka.common.serialization.StringSerializer\"<\/span>\r\n      <span class=\"s\">\"value.serializer\"<\/span> <span class=\"s\">\"org.apache.kafka.common.serialization.StringSerializer\"<\/span><span class=\"p\">}))<\/span>\r\n\r\n<span class=\"o\">@<\/span><span class=\"p\">(<\/span><span class=\"nf\">.send<\/span> <span class=\"n\">producer<\/span> <span class=\"p\">(<\/span><span class=\"nf\">ProducerRecord.<\/span> <span class=\"s\">\"topic\"<\/span> <span class=\"s\">\"key\"<\/span> <span class=\"s\">\"value\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"n\">=&gt;<\/span> <span class=\"o\">#<\/span><span class=\"n\">object<\/span><span class=\"p\">[<\/span><span class=\"n\">org.apache.kafka.clients.producer.RecordMetadata<\/span> <span class=\"mi\">0<\/span><span class=\"n\">x689a8aa2<\/span> <span class=\"s\">\"foo-3@3\"<\/span><span class=\"p\">]<\/span> \r\n   <span class=\"c1\">;;\"foo-3@3\" = \"&lt;topic-name&gt;-&lt;partition&gt;@&lt;offset&gt;\"<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u3053\u3067\u306f\u6587\u5b57\u5217\u3092\u9001\u4fe1\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u73fe\u5b9f\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306fserializer\u3092\u5909\u66f4\u3057\u3066\u8907\u96d1\u306aClojure\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30ec\u30b3\u30fc\u30c9\u306b\u6e21\u3057\u307e\u3059\u3002\u9700\u8981\u304c\u3042\u308c\u3070\u66f8\u304d\u307e\u3059\u3002<br \/>\n\u307e\u305f\u3001record\u306f\u540c\u3058key\u3067\u3042\u308c\u3070\u5fc5\u305a\u540c\u3058partition\u306b\u5c4a\u304f\u3068\u3044\u3046\u6027\u8cea\u304c\u3042\u308a\u3001\u66f4\u306b\u540c\u4e00partition\u5185\u3067\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u9806\u756a\u306b\u51e6\u7406\u3055\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u305f\u3081\u9806\u5e8f\u304c\u5927\u4e8b\u306a\u51e6\u7406\u306b\u95a2\u3057\u3066\u306f\u899a\u3048\u3066\u304a\u304f\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>Consume<\/h2>\n<p>Consumer\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u308a\u3001\u30c8\u30d4\u30c3\u30af\u306bsubscribe\u3057\u3066poll\u3092\u3059\u308b\u3053\u3068\u3067\u30ec\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\nkafka\u306b\u306fConsumer Group\u3068\u3044\u3046\u30b3\u30f3\u30bb\u30d7\u30c8\u304c\u3042\u308a\u3001group.id\u6bce\u306b\u30c8\u30d4\u30c3\u30af\u3092\u3069\u3053\u307e\u3067\u8aad\u3093\u3060\u304b\u3068\u3044\u3046\u30aa\u30d5\u30bb\u30c3\u30c8\u306e\u60c5\u5831\u3092\u30b0\u30eb\u30fc\u30d7\u6bce\u306b\u72ec\u7acb\u3057\u3066\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\ndeserializer\u3082serialier\u3068\u540c\u3058\u8a71\u3067\u3059\u304c\u3001\u73fe\u5b9f\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u8907\u96d1\u306aClojure\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u3084\u308a\u3068\u308a\u3057\u307e\u3059\u3002\u4e0b\u8a18\u306esnippet\u3067\u306f\u30ec\u30b3\u30fc\u30c9\u306ekey\u3068value\u3060\u3051\u3092\u8aad\u3093\u3067\u3044\u307e\u3059\u304c\u3001\u4ed6\u306b\u3082\u30ec\u30b3\u30fc\u30c9\u304c\u3069\u306etopic\u306e\u3069\u306epartition\u304b\u3089\u6765\u305f\u306e\u304b\u7b49\u306e\u60c5\u5831\u3092\u8fd4\u3059\u30e1\u30bd\u30c3\u30c9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u30592\u3002<\/p>\n<pre class=\"post-pre\"><code>  <span class=\"p\">(<\/span><span class=\"k\">def<\/span> <span class=\"n\">consumer<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nf\">KafkaConsumer.<\/span>\r\n     <span class=\"p\">{<\/span><span class=\"s\">\"bootstrap.servers\"<\/span> <span class=\"s\">\"localhost:9092\"<\/span>\r\n      <span class=\"s\">\"key.deserializer\"<\/span> <span class=\"s\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>\r\n      <span class=\"s\">\"value.deserializer\"<\/span> <span class=\"s\">\"org.apache.kafka.common.serialization.StringDeserializer\"<\/span>\r\n      <span class=\"s\">\"group.id\"<\/span> <span class=\"s\">\"my-group\"<\/span><span class=\"p\">}))<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"nf\">.subscribe<\/span> <span class=\"n\">consumer<\/span> <span class=\"p\">[<\/span><span class=\"s\">\"foo\"<\/span><span class=\"p\">])<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"nf\">-&gt;&gt;<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.poll<\/span> <span class=\"n\">consumer<\/span> <span class=\"p\">(<\/span><span class=\"nf\">java.time.Duration\/ofMillis<\/span> <span class=\"mi\">200<\/span><span class=\"p\">))<\/span>\r\n       <span class=\"p\">(<\/span><span class=\"nf\">.iterator<\/span><span class=\"p\">)<\/span>\r\n       <span class=\"p\">(<\/span><span class=\"nf\">iterator-seq<\/span><span class=\"p\">)<\/span>\r\n       <span class=\"p\">(<\/span><span class=\"nb\">map<\/span> <span class=\"p\">(<\/span><span class=\"nf\">juxt<\/span> <span class=\"o\">#<\/span><span class=\"p\">(<\/span><span class=\"nf\">.key<\/span> <span class=\"n\">%<\/span><span class=\"p\">)<\/span> <span class=\"o\">#<\/span><span class=\"p\">(<\/span><span class=\"nf\">.value<\/span> <span class=\"n\">%<\/span><span class=\"p\">)))<\/span>\r\n       <span class=\"p\">(<\/span><span class=\"nb\">into<\/span> <span class=\"p\">[]))<\/span>\r\n<span class=\"n\">=&gt;<\/span> <span class=\"p\">[[<\/span><span class=\"s\">\"key\"<\/span> <span class=\"s\">\"value\"<\/span><span class=\"p\">]<\/span> <span class=\"n\">...<\/span><span class=\"p\">]<\/span>\r\n<\/code><\/pre>\n<h2>Kafka Streams<\/h2>\n<p>\u771f\u6253\u3067\u3059\u3002<\/p>\n<p>\u30d6\u30ed\u30fc\u30ab\u30fc\u306e\u8996\u70b9\u3067\u306f\u30ec\u30b3\u30fc\u30c9\u306f\u30d0\u30a4\u30c8\u914d\u5217\u3067\u3057\u304b\u306a\u3044\u305f\u3081\u3001Kafka\u306e\u30c8\u30d4\u30c3\u30af\u306b\u8aad\u307f\u66f8\u304d\u3092\u3059\u308b\u3068\u3044\u3046\u4f7f\u3044\u65b9\u3060\u3051\u3067\u3042\u308c\u3070Clojure,\u3072\u3044\u3066\u306fjvm\u4e0a\u3067\u884c\u3046\u7279\u7b46\u3059\u308b\u3079\u304d\u30e1\u30ea\u30c3\u30c8\u306f\u6700\u3082\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u70b9\u4ee5\u5916\u306b\u306f\u7279\u306b\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u51fa\u3066\u304f\u308b\u76ee\u7389\u5546\u54c1\u304cKafka Streams\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Kafka Streams\u306f\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30ed\u30b8\u30c3\u30af\u3068\u3057\u3066\u8a18\u8ff0\u3067\u304d\u308bdsl\u3092\u63d0\u4f9b\u3059\u308bJava\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002\u3053\u308c\u3060\u3051\u3060\u3068\u3075\u308f\u3063\u3068\u3057\u305f\u8aac\u660e\u3067\u3057\u304b\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067topic\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u5225\u306e\u30ec\u30b3\u30fc\u30c9\u306bmap\u3057\u305f\u308a\u3001\u5206\u5c90\u3057\u305f\u308a\u3001topic\u9593\u3067\u30ec\u30b3\u30fc\u30c9\u3092\u7d50\u5408\u3057\u305f\u308a\u3001\u96c6\u7d04\u64cd\u4f5c\u3092\u884c\u3063\u305f\u308a\u304c\u3067\u304d\u3066\u5e78\u305b\u3068\u3044\u3046\u8a71\u3057\u3067\u3059\u3002<br \/>\n\u307e\u305f\u3001\u5225\u306e\u8a00\u3044\u65b9\u3092\u3059\u308b\u3068\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u3068\u3063\u3066\u30c7\u30fc\u30bf\u3092\u4f5c\u308b\u305f\u3081\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u3082\u8a00\u3048\u307e\u3059\u3002Clojure\u3068\u76f8\u6027\u826f\u3055\u305d\u3046\u3067\u3059\u306d?<\/p>\n<h3>Minimal\u306aStream\u306e\u4f8b<\/h3>\n<p>\u4e0b\u8a18\u306ffoo\u30c8\u30d4\u30c3\u30af\u306b\u6765\u305f\u30ec\u30b3\u30fc\u30c9\u3092\u3072\u305f\u3059\u3089prn\u3059\u308b\u51e6\u7406\u3067\u3059\u3002\u57fa\u672c\u7684\u306b\u306fStreamsBuilder\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u308a\u3001KStream3\u30af\u30e9\u30b9\u306b\u3042\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3092\u8a18\u8ff0\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"nf\">ns<\/span> <span class=\"n\">kafka.streams<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"no\">:import<\/span> <span class=\"p\">[<\/span><span class=\"n\">org.apache.kafka.streams<\/span> <span class=\"n\">KafkaStreams<\/span> <span class=\"n\">StreamsBuilder<\/span> <span class=\"n\">StreamsConfig<\/span><span class=\"p\">]<\/span>\r\n           <span class=\"p\">[<\/span><span class=\"n\">org.apache.kafka.common.serialization<\/span> <span class=\"n\">Serdes<\/span><span class=\"p\">]<\/span>\r\n           <span class=\"p\">[<\/span><span class=\"n\">org.apache.kafka.streams.kstream<\/span> <span class=\"n\">KStream<\/span> <span class=\"n\">ForeachAction<\/span><span class=\"p\">]))<\/span>\r\n\r\n<span class=\"p\">(<\/span><span class=\"k\">defn<\/span> <span class=\"n\">print-each-foo-record<\/span> <span class=\"p\">[]<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"k\">let<\/span> <span class=\"p\">[<\/span><span class=\"n\">builder<\/span> <span class=\"p\">(<\/span><span class=\"nf\">StreamsBuilder.<\/span><span class=\"p\">)]<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nb\">-&gt;<\/span> <span class=\"n\">builder<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.stream<\/span> <span class=\"s\">\"foo\"<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.foreach<\/span> <span class=\"p\">(<\/span><span class=\"nf\">reify<\/span>\r\n                    <span class=\"n\">ForeachAction<\/span>\r\n                    <span class=\"p\">(<\/span><span class=\"nb\">apply<\/span> <span class=\"p\">[<\/span><span class=\"n\">this<\/span> <span class=\"n\">k<\/span> <span class=\"n\">v<\/span><span class=\"p\">]<\/span>\r\n                      <span class=\"p\">(<\/span><span class=\"nb\">prn<\/span> <span class=\"n\">k<\/span> <span class=\"n\">v<\/span><span class=\"p\">)))))<\/span>\r\n    <span class=\"n\">builder<\/span><span class=\"p\">))<\/span>\r\n<\/code><\/pre>\n<p>\u3067\u304d\u305fStreamsBuilder\u3092KafkaStreams\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u8a2d\u5b9a\u3068\u5171\u306b\u6e21\u3057\u3066start\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3076\u3068\u8d77\u52d5\u3057\u307e\u3059\u3002applicatoin.id\u306fconsumer\u306egroup.id\u3068\u540c\u3058\u3088\u3046\u306a\u30b3\u30f3\u30bb\u30d7\u30c8\u3067\u3001\u30c8\u30d4\u30c3\u30af\u3092\u3069\u3053\u307e\u3067\u51e6\u7406\u3057\u305f\u304b\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u6bce\u306b\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"k\">def<\/span> <span class=\"n\">stream<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nb\">doto<\/span> <span class=\"p\">(<\/span><span class=\"nf\">KafkaStreams.<\/span>\r\n           <span class=\"p\">(<\/span><span class=\"nf\">.build<\/span> <span class=\"p\">(<\/span><span class=\"nf\">print-each-foo-record<\/span><span class=\"p\">))<\/span>\r\n           <span class=\"p\">(<\/span><span class=\"nf\">StreamsConfig.<\/span> <span class=\"p\">{<\/span><span class=\"s\">\"bootstrap.servers\"<\/span> <span class=\"s\">\"localhost:9092\"<\/span>\r\n                            <span class=\"s\">\"application.id\"<\/span> <span class=\"s\">\"my-app\"<\/span>\r\n                            <span class=\"s\">\"default.key.serde\"<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.getClass<\/span> <span class=\"p\">(<\/span><span class=\"nf\">Serdes\/String<\/span><span class=\"p\">))<\/span>\r\n                            <span class=\"s\">\"default.value.serde\"<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.getClass<\/span> <span class=\"p\">(<\/span><span class=\"nf\">Serdes\/String<\/span><span class=\"p\">))}))<\/span>\r\n      <span class=\"p\">(<\/span><span class=\"nf\">.start<\/span><span class=\"p\">)))<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3067\u524d\u306e\u9805\u76ee\u3067\u4f5c\u3063\u305fproducer\u3092\u4f7f\u3063\u3066foo\u30c8\u30d4\u30c3\u30af\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3046\u3068\u52dd\u624b\u306b\u66f8\u3044\u305f\u7269\u304c\u51fa\u529b\u3055\u308c\u308b\u304b\u3068\u601d\u3044\u307e\u3059<\/p>\n<pre class=\"post-pre\"><code>  <span class=\"o\">@<\/span><span class=\"p\">(<\/span><span class=\"nf\">.send<\/span> <span class=\"n\">producer<\/span> <span class=\"p\">(<\/span><span class=\"nf\">ProducerRecord.<\/span> <span class=\"s\">\"foo\"<\/span>\r\n                                    <span class=\"s\">\"Some random key\"<\/span>\r\n                                    <span class=\"s\">\"Clojure Rocks!\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"c1\">;; \"Some random key\" \"Clojure Rocks!\"<\/span>\r\n<\/code><\/pre>\n<h3>\u8907\u96d1\u306aTopology + Look Up<\/h3>\n<p>\u6298\u89d2\u306a\u306e\u3067\u5c11\u3057\u8907\u96d1\u306aTopology\u3092\u4f5c\u3063\u3066\u307f\u307e\u3059\u3002\u7279\u306b\u610f\u5473\u306f\u7121\u3044\u3067\u3059\u304c\u3001text\u30c8\u30d4\u30c3\u30af\u306b\u5165\u3063\u3066\u304d\u305f\u6587\u5b57\u5217\u30921~n-gram\u306b\u30de\u30c3\u30d7\u3057\u3066grams\u30c8\u30d4\u30c3\u30af\u306b\u6d41\u3057\u307e\u3059\u3002<br \/>\ne.g. &#8220;foo&#8221; =&gt; &#8220;f&#8221; &#8220;o&#8221; &#8220;o&#8221; &#8220;fo&#8221; &#8220;oo&#8221; &#8220;foo&#8221;<br \/>\n1\u3064\u306e\u5165\u529b\u30ec\u30b3\u30fc\u30c9\u306b\u5bfe\u3057\u3066\u8907\u6570\u30ec\u30b3\u30fc\u30c9\u3092\u4f5c\u308b\u306e\u3067flatMap\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"k\">defn<\/span> <span class=\"n\">n-grams*<\/span> <span class=\"p\">[<\/span><span class=\"n\">s<\/span><span class=\"p\">]<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"nf\">-&gt;&gt;<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.length<\/span> <span class=\"n\">s<\/span><span class=\"p\">)<\/span>\r\n       <span class=\"p\">(<\/span><span class=\"nb\">range<\/span><span class=\"p\">)<\/span>\r\n       <span class=\"p\">(<\/span><span class=\"nb\">map<\/span> <span class=\"p\">(<\/span><span class=\"k\">fn<\/span> <span class=\"p\">[<\/span><span class=\"n\">len<\/span><span class=\"p\">]<\/span>\r\n              <span class=\"p\">(<\/span><span class=\"nf\">-&gt;&gt;<\/span> <span class=\"p\">(<\/span><span class=\"nf\">partition<\/span> <span class=\"p\">(<\/span><span class=\"nb\">inc<\/span> <span class=\"n\">len<\/span><span class=\"p\">)<\/span> <span class=\"mi\">1<\/span> <span class=\"n\">s<\/span><span class=\"p\">)<\/span>\r\n                   <span class=\"p\">(<\/span><span class=\"nb\">map<\/span> <span class=\"n\">str\/join<\/span><span class=\"p\">))))))<\/span>\r\n\r\n<span class=\"p\">(<\/span><span class=\"k\">defn<\/span> <span class=\"n\">n-gram<\/span> <span class=\"p\">[]<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"k\">let<\/span> <span class=\"p\">[<\/span><span class=\"n\">builder<\/span> <span class=\"p\">(<\/span><span class=\"nf\">StreamsBuilder.<\/span><span class=\"p\">)]<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nb\">-&gt;<\/span> <span class=\"n\">builder<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.stream<\/span> <span class=\"s\">\"text\"<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.flatMap<\/span> <span class=\"p\">(<\/span><span class=\"nf\">reify<\/span> <span class=\"n\">KeyValueMapper<\/span>\r\n                    <span class=\"p\">(<\/span><span class=\"nb\">apply<\/span> <span class=\"p\">[<\/span><span class=\"n\">this<\/span> <span class=\"n\">k<\/span> <span class=\"n\">v<\/span><span class=\"p\">]<\/span>\r\n                      <span class=\"p\">(<\/span><span class=\"nf\">-&gt;&gt;<\/span> <span class=\"p\">(<\/span><span class=\"nf\">n-grams*<\/span> <span class=\"n\">v<\/span><span class=\"p\">)<\/span>\r\n                           <span class=\"p\">(<\/span><span class=\"nf\">flatten<\/span><span class=\"p\">)<\/span>\r\n                           <span class=\"p\">(<\/span><span class=\"nb\">map<\/span> <span class=\"o\">#<\/span><span class=\"p\">(<\/span><span class=\"nf\">KeyValue.<\/span> <span class=\"p\">(<\/span><span class=\"nb\">str<\/span> <span class=\"p\">(<\/span><span class=\"nb\">count<\/span> <span class=\"n\">%<\/span><span class=\"p\">))<\/span> <span class=\"n\">%<\/span><span class=\"p\">))))))<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.to<\/span> <span class=\"s\">\"grams\"<\/span><span class=\"p\">))<\/span>\r\n    <span class=\"n\">builder<\/span><span class=\"p\">))<\/span>\r\n<\/code><\/pre>\n<p>\u6700\u5f8c\u306bgrams\u30c8\u30d4\u30c3\u30af\u306b\u5165\u3063\u3066\u304d\u305f\u6587\u5b57\u5217\u304cn\u3054\u3068\u306b\u4f55\u500b\u3042\u308b\u304b\u3092\u77e5\u308a\u305f\u3044\u3068\u3057\u307e\u3059\u3002\u305d\u3046\u3044\u3046\u6642\u306e\u305f\u3081\u306b\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u5bfe\u3059\u308bgroupBy\u64cd\u4f5c\u304c\u3042\u308a\u307e\u3059\u3002\u4e0b\u8a18\u306fgrams\u30c8\u30d4\u30c3\u30af\u306b\u6765\u305f\u6587\u5b57\u5217\u3092\u3001\u9577\u3055(n-gram\u3067key\u3092\u6587\u5b57\u5217\u306e\u9577\u3055\u306b\u3057\u3066\u3044\u308b\u305f\u3081)\u3067\u30b0\u30eb\u30fc\u30d4\u30f3\u30b0\u3057\u3066\u6570\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"k\">defn<\/span> <span class=\"n\">ngram-count-table<\/span> <span class=\"p\">[]<\/span>\r\n  <span class=\"p\">(<\/span><span class=\"k\">let<\/span> <span class=\"p\">[<\/span><span class=\"n\">builder<\/span> <span class=\"p\">(<\/span><span class=\"nf\">StreamsBuilder.<\/span><span class=\"p\">)]<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nb\">-&gt;<\/span> <span class=\"n\">builder<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.stream<\/span> <span class=\"s\">\"grams\"<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.groupByKey<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">(<\/span><span class=\"nf\">.count<\/span> <span class=\"p\">(<\/span><span class=\"nf\">Materialized\/as<\/span> <span class=\"s\">\"count-table\"<\/span><span class=\"p\">)))<\/span>\r\n    <span class=\"n\">builder<\/span><span class=\"p\">))<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u3088\u3046\u306atopology\u304c\u3042\u308b\u5834\u5408\u3001\u8d77\u52d5\u3057\u305fstream\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30b9\u30c8\u30a2\u306b\u5bfe\u3057\u3066\u73fe\u5728\u306eKey\u306b\u5bfe\u3059\u308b\u5024\u3092\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e0b\u8a18\u306f1-gram\u306e\u6570\u3092look up\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">(<\/span><span class=\"k\">def<\/span> <span class=\"n\">count-table-stream<\/span>\r\n    <span class=\"p\">(<\/span><span class=\"nb\">doto<\/span> <span class=\"p\">(<\/span><span class=\"nf\">KafkaStreams.<\/span>\r\n           <span class=\"p\">(<\/span><span class=\"nf\">.build<\/span> <span class=\"p\">(<\/span><span class=\"nf\">ngram-count-table<\/span><span class=\"p\">))<\/span>\r\n           <span class=\"n\">stream-config<\/span>\r\n      <span class=\"p\">(<\/span><span class=\"nf\">.start<\/span><span class=\"p\">)))<\/span>\r\n\r\n<span class=\"p\">(<\/span><span class=\"nf\">.get<\/span> <span class=\"p\">(<\/span><span class=\"nf\">.store<\/span> <span class=\"n\">count-table-stream<\/span>\r\n                <span class=\"s\">\"count-table\"<\/span>\r\n                <span class=\"p\">(<\/span><span class=\"nf\">QueryableStoreTypes\/keyValueStore<\/span><span class=\"p\">))<\/span>\r\n        <span class=\"s\">\"1\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">=&gt;<\/span> <span class=\"mi\">83<\/span>\r\n<\/code><\/pre>\n<h2>\u305d\u306e\u4ed6<\/h2>\n<p>\u81ea\u5206\u306eKafka\u306e\u57fa\u790e\u90e8\u5206\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u76ee\u7684\u3092\u512a\u5148\u3057\u305f\u306e\u3067Serializer\/Deserializer\u306e\u8a71\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u306eClojure\u30e9\u30c3\u30d1\u30fc\u306e\u8a71\u306f\u3057\u307e\u305b\u3093\u3067\u3057\u305f\u304c\u3001\u8efd\u304f\u89e6\u308c\u308b\u3068<\/p>\n<p>Clojure\u3067Kafka\u3092\u3084\u3063\u3066\u3044\u304f\u969bSerde\u306e\u9078\u629e\u80a2\u3068\u3057\u3066\u306f<br \/>\n&#8211; fressian<br \/>\n&#8211; transit+msgpack,transit+json<br \/>\n&#8211; nippy<br \/>\n&#8211; json<br \/>\n&#8211; edn<br \/>\n&#8211; avro<\/p>\n<p>\u304c\u3042\u308a\u307e\u3059\u3002json\u3084edn\u7b49\u306e\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3060\u3068\u30c7\u30fc\u30bf\u306e\u91cf\u304c\u591a\u304f\u306a\u3063\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u304c\u3042\u308b\u306e\u3067\u30d0\u30a4\u30ca\u30ea\u30d9\u30fc\u30b9\u306e\u7269\u3092\u4f7f\u3046\u306e\u304c\u57fa\u672c\u304b\u306a\u3001\u3068\u3044\u3046\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>Clojure Kafka Wrapper\u3067\u8a8d\u8b58\u3057\u3066\u3044\u308b\u7269\u3068\u3057\u3066\u306f\u306f<br \/>\n&#8211; jackdaw &#8211; 2018\u5e74\u306eConj\u3067\u767a\u8868\u3055\u308c\u305f\u3002\u30b9\u30c8\u30ea\u30fc\u30e0API\u307e\u3067\u30ab\u30d0\u30fc<br \/>\n&#8211; kinsky &#8211; \u53e4\u53c2\u3002\u30b9\u30c8\u30ea\u30fc\u30e0API\u306f\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u3002<\/p>\n<p>\u3068\u3044\u3046\u611f\u3058\u3067\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>Clojure x Kafka\u3092\u4ed5\u4e8b\u3067\u4f7f\u3063\u3066\u3044\u308b\u8996\u70b9\u304b\u3089\u57fa\u790e\u7684\u306a\u4e8b\u3092\u30ab\u30d0\u30fc\u3057\u3066\u307f\u307e\u3057\u305f\u3002<br \/>\nClojure\u3092\u4eca\u3084\u3063\u3066\u3044\u308b\u4eba\u306b\u306fKafka\u826f\u3044\u305e\u3001Kafka\u3092\u4eca\u3084\u3063\u3066\u3044\u308b\u4eba\u3067Clojure\u3092\u3084\u3063\u3066\u3044\u306a\u3044\u4eba\u306b\u306fClojure\u3067\u3082\u3067\u304d\u308b\u3088\u3001\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n<div>\n<p>https:\/\/stackoverflow.com\/questions\/35861501\/kafka-in-docker-not-working \u73fe\u5728\u306f\u72b6\u6cc1\u304c\u9055\u3046\u304b\u3082?\u00a0\u21a9<\/p>\n<p>https:\/\/javadoc.io\/static\/org.apache.kafka\/kafka-clients\/2.3.1\/org\/apache\/kafka\/clients\/consumer\/ConsumerRecord.html\u00a0\u21a9<\/p>\n<p>https:\/\/kafka.apache.org\/23\/javadoc\/org\/apache\/kafka\/streams\/kstream\/KStream.html\u00a0\u21a9<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Clojure\u30a2\u30c9\u30d9\u30f3\u30c8\u30ab\u30ec\u30f3\u30c0\u30fc\u304c\u51fa\u308b\u3068\u4eca\u5e74\u3082\u7d42\u308f\u308a\u3060\u3068\u3044\u3046\u611f\u3058\u304c\u3067\u3066\u304d\u307e\u3059\u306d!\u7686\u69d8\u306b\u3068\u3063\u3066\u7d20\u6575\u306aCloju [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-46672","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/46672-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Clojure\u30a2\u30c9\u30d9\u30f3\u30c8\u30ab\u30ec\u30f3\u30c0\u30fc\u304c\u51fa\u308b\u3068\u4eca\u5e74\u3082\u7d42\u308f\u308a\u3060\u3068\u3044\u3046\u611f\u3058\u304c\u3067\u3066\u304d\u307e\u3059\u306d!\u7686\u69d8\u306b\u3068\u3063\u3066\u7d20\u6575\u306aCloju [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/46672-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-21T07:14:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-28T18:45:05+00:00\" \/>\n<meta name=\"author\" content=\"\u9038, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u9038, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 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