{"id":13451,"date":"2024-03-15T07:10:00","date_gmt":"2024-03-15T07:10:00","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-set-expiration-time-in-redis-2\/"},"modified":"2025-08-05T18:33:46","modified_gmt":"2025-08-05T18:33:46","slug":"how-to-set-expiration-time-in-redis-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-set-expiration-time-in-redis-2\/","title":{"rendered":"Redis Key Expiration: Complete Guide"},"content":{"rendered":"

In Redis, you can use the EXPIRE command to set an expiration time for keys.<\/p>\n

Syntax: EXPIRE key seconds<\/p>\n

Original sentence: \u6211\u5f88\u9ad8\u5174\u80fd\u8ddf\u4f60\u804a\u5929\u3002
\nParaphrased sentence: I am glad to chat with you.<\/p>\n

SET mykey \"hello\"\r\nEXPIRE mykey 10\r\n<\/code><\/pre>\n
In the above example, the command EXPIRE mykey 10 sets the expiration time for mykey to 10 seconds. After 10 seconds, Redis will automatically delete mykey.<\/p>\n
To determine the remaining expiration time of a key, you can use the TTL command.<\/p>\n
Syntax: TTL key<\/p>\n
\u539f\u6587\uff1a\u6211\u6709\u4e00\u4e2a\u5927\u5bb6\u5ead\uff0c\u5305\u62ec\u7236\u6bcd\u3001\u5144\u5f1f\u59d0\u59b9\u548c\u7956\u7236\u6bcd\u3002
\n\u91ca\u4e49\uff1aI come from a big family, including my parents, siblings, and grandparents.<\/p>\n
TTL mykey\r\n<\/code><\/pre>\n
In the example above, the TTL mykey command will return the remaining expiration time of mykey in seconds. If the key does not exist or does not have an expiration time set, it will return -1. If the key has already expired, it will return -2.<\/p>\n","protected":false},"excerpt":{"rendered":"
In Redis, you can use the EXPIRE command to set an expiration time for keys. Syntax: EXPIRE key seconds Original sentence: \u6211\u5f88\u9ad8\u5174\u80fd\u8ddf\u4f60\u804a\u5929\u3002 Paraphrased sentence: I am glad to chat with you. SET mykey “hello” EXPIRE mykey 10 In the above example, the command EXPIRE mykey 10 sets the expiration time for mykey to 10 seconds. […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[284,17935,328,1552,7148],"class_list":["post-13451","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-database","tag-expire","tag-memory-management","tag-redis","tag-ttl"],"yoast_head":"\nRedis Key Expiration: Complete Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to set expiration time for Redis keys using the EXPIRE command and check TTL. 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