{"id":113466,"date":"2024-03-22T21:28:16","date_gmt":"2024-03-22T12:28:16","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9b%e3%83%83%e3%83%88%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%82%92%e8%87%aa%e5%8b%95%e5%8c%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-05T09:19:53","modified_gmt":"2024-04-05T00:19:53","slug":"java%e3%81%a7%e3%83%9b%e3%83%83%e3%83%88%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%82%92%e8%87%aa%e5%8b%95%e5%8c%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9b%e3%83%83%e3%83%88%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%82%92%e8%87%aa%e5%8b%95%e5%8c%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"java\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u81ea\u52d5\u5316\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

Java\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u306b\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4e00\u822c\u7684\u306a\u624b\u6cd5\u3092\u3044\u304f\u3064\u304b\u793a\u3057\u307e\u3059\u3002<\/p>\n

1. Guava \u306e LoadingCache \u3092\u5229\u7528\u3059\u308b\uff1aGuava \u306b\u306f LoadingCache \u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u304c\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u7684\u306b\u30ed\u30fc\u30c9\u3057\u3066\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002<\/p>\n

CacheLoader\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3066\u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u307f\u306e\u30ed\u30b8\u30c3\u30af\u3092\u5b9a\u7fa9\u3057\u3001CacheBuilder\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066LoadingCache\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n

\u305d\u308c\u304c\u5229\u76ca\u3092\u5f97\u308b\u552f\u4e00\u306e\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u65e5\u672c\u8a9e\u306b\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059: LoadingCache cache = CacheBuilder.newBuilder().build(<\/p>\n

new CacheLoader() {<\/p>\n

public Value load(Key \u30ad\u30fc) throws Exception {<\/p>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u305d\u306e\u4ed6\u306e\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u3002<\/p>\n

loadDataFromDataSource(key)\u3092\u30cd\u30a4\u30c6\u30a3\u30d6\u30ea\u30bf\u30fc\u30f3\u3057\u307e\u3059<\/p>\n

\u3069\u3053\u3067\u9999\u8f9b\u6599\u3092\u4fdd\u7ba1\u3057\u307e\u3059\u304b\u3002<\/p>\n

\u4eca\u5f8c\u3068\u3082\u3088\u308d\u3057\u304f\u304a\u9858\u3044\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n

\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u65e5\u672c\u8a9e\u3067\u3053\u306e\u6587\u3092\u8a00\u3044\u63db\u3048\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

Ehcache \u3092\u5229\u7528\uff1aEhcache\u306f\u3001\u30db\u30c3\u30c8\u306a\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3001\u4eba\u6c17\u306e\u3042\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002Ehcache \u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u69cb\u6210\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u6226\u7565\u3092\u683c\u7d0d\u3057\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u30e1\u30bd\u30c3\u30c9\u306b\u9069\u5207\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n

import java.util.List;
\nimport java.util.ArrayList;<\/p>\n

public class ArrayUtil {<\/p>\n

public static List removeDuplicates(List list) {
\nif (list == null || list.isEmpty()) {
\nreturn list;
\n}<\/p>\n

List newList = new ArrayList<>();
\nfor (T element : list) {
\nif (!newList.contains(element)) {
\nnewList.add(element);
\n}
\n}
\nreturn newList;
\n}
\n}
\n“`<\/p>\n

@CacheResult(cacheName = “myCache”)<\/p>\n

public \u306e\u7d50\u679c\u3092 loadData(Key \u30ad\u30fc) \u306b\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u3001\u305d\u306e\u4ed6\u306e\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080<\/p>\n

\u30ad\u30fc\u306b\u5bfe\u5fdc\u3059\u308b\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u304b\u3089\u8aad\u307f\u8fbc\u3080<\/p>\n

\u5f7c\u306f\u6bce\u65e5\u8d70\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u5f7c\u304c\u30e9\u30f3\u30ca\u30fc\u3060\u3068\u306f\u601d\u3044\u307e\u305b\u3093\u3002<\/p>\n

\u3044\u304b\u306a\u308b\u7a2e\u985e\u3067\u3042\u3063\u3066\u3082\u3001\u97f3\u697d\u306f\u79c1\u305f\u3061\u306e\u9b42\u306e\u53cd\u6620\u3067\u3059\u3002<\/p>\n

Spring Cache\u3092\u4f7f\u3046\uff1aSpring\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u4f7f\u7528\u3057\u3066\u3044\u308c\u3070\u3001Spring Cache\u3092\u4f7f\u3063\u3066\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u304d\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u5fc5\u8981\u306a\u30e1<\/p>\n

\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u65b9\u6cd5\u306b\u9069\u5207\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\uff08\u4f8b\u5982\uff1a@Cacheable\u3001@CachePut\u3001@CacheEvict\uff09\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n

\u5f7c\u304c\u3059\u3050\u306b\u79c1\u3092\u898b\u3064\u3051\u305f\u306e\u306f\u3001\u4eba\u6df7\u307f\u304c\u5c11\u306a\u304b\u3063\u305f\u304a\u304b\u3052\u3060\u3002<\/p>\n

@Cacheable(value = “myCache”, key = “#key”)<\/p>\n

public Result loadData(Key key) {<\/p>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u305d\u306e\u4ed6\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002<\/p>\n

loadDataFromDataSource(key); \u3092native\u306b\u8fd4\u3059.<\/p>\n

\u3053\u308c\u306f\u79c1\u306e\u65b0\u3057\u3044\u8eca\u3067\u3001\u79c1\u306f\u3053\u306e\u8eca\u3092\u3068\u3066\u3082\u8a87\u308a\u306b\u601d\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306f\u3001\u3042\u306a\u305f\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u901a\u77e5\u3092\u9001\u4fe1\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u3044\u305a\u308c\u306e\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u5834\u5408\u306b\u3082\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6709\u52b9\u671f\u9650\u3068\u30dd\u30ea\u30b7\u30fc\u306b\u6ce8\u610f\u3057\u3066\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3068\u6b63\u78ba\u6027\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30e1\u30e2\u30ea\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5074\u9762\u3082\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u5fc5\u8981\u306e\u306a\u3044\u30e1\u30e2\u30ea\u4f7f\u7528\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u614e\u91cd\u306b\u8003\u616e\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Java\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u306b\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4e00\u822c\u7684\u306a\u624b\u6cd5\u3092\u3044\u304f\u3064\u304b\u793a\u3057\u307e\u3059\u3002 1. Guava \u306e LoadingCache \u3092\u5229\u7528\u3059\u308b\uff1aGuava \u306b\u306f L […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-113466","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\njava\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u81ea\u52d5\u5316\u3059\u308b\u65b9\u6cd5 - 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\/ja\/blog\/java\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u81ea\u52d5\u5316\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"java\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u81ea\u52d5\u5316\u3059\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u306b\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4e00\u822c\u7684\u306a\u624b\u6cd5\u3092\u3044\u304f\u3064\u304b\u793a\u3057\u307e\u3059\u3002 1. 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