{"id":304888,"date":"2023-07-21T18:10:14","date_gmt":"2023-07-21T10:10:14","guid":{"rendered":"https:\/\/www.idc.net\/help\/304888\/"},"modified":"2023-07-21T18:10:14","modified_gmt":"2023-07-21T10:10:14","slug":"%e9%9d%a2%e8%af%95%e5%ae%98%ef%bc%9a%e5%a6%82%e4%bd%95%e4%bf%9d%e8%af%81%e6%9c%ac%e5%9c%b0%e7%bc%93%e5%ad%98%e7%9a%84%e4%b8%80%e8%87%b4%e6%80%a7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/304888\/","title":{"rendered":"\u9762\u8bd5\u5b98\uff1a\u5982\u4f55\u4fdd\u8bc1\u672c\u5730\u7f13\u5b58\u7684\u4e00\u81f4\u6027\uff1f"},"content":{"rendered":"

\n

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\u7136\u800c\uff0c\u8fd9\u5c31\u50cf\u4f60\u6709\u4e00\u8f86\u8d85\u7ea7\u8c6a\u534e\u7684\u623f\u8f66\u4e00\u6837\uff0c\u867d\u7136\u5b83\u7a7a\u95f4\u5f88\u5927\uff0c\u8bbe\u5907\u5f88\u5168\uff0c\u4f46\u4f60\u53bb\u5e02\u4e2d\u5fc3\u7684\u65f6\u5019\uff0c\u4f9d\u7136\u4f1a\u5f00\u5c0f\u8f7f\u8f66\u4e00\u6837\uff0c\u4e3a\u5565\uff1f\u597d\u505c\u8f66\u554a\uff01\u6240\u4ee5\uff0c\u4e0d\u540c\u7684\u7f13\u5b58\u7c7b\u578b\u662f\u6709\u4e0d\u540c\u5f97\u4f7f\u7528\u573a\u666f\u7684\u3002<\/p>\n

\u5e76\u4e14\uff0c\u4e3a\u4e86\u9632\u6b62\u7f13\u5b58\u96ea\u5d29\u95ee\u9898\u3001\u7f13\u5b58\u51fb\u7a7f\u95ee\u9898\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u91c7\u7528\u591a\u7ea7\u7f13\u5b58\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u6240\u8c13\u7684\u591a\u7ea7\u7f13\u5b58\u5c31\u662f\uff1a\u5206\u5e03\u5f0f\u7f13\u5b58\uff08Redis \u6216 Memcached\uff09+\u672c\u5730\u7f13\u5b58\uff08Guava Cache \u6216 Caffeine\uff09\u3002\u56e0\u4e3a\u5206\u5e03\u5f0f\u7f13\u5b58\u53ef\u80fd\u4f1a\u5931\u6548\u3001\u53ef\u80fd\u4f1a\u6302\u6389\uff0c\u6240\u4ee5\u4e3a\u4e86\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\uff0c\u591a\u7ea7\u7f13\u5b58\u7b56\u7565\u4f7f\u7528\u7684\u975e\u5e38\u5e7f\u6cdb\u3002<\/p>\n

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\n

\u201c<\/span><\/p>\n

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1\u3001\u5982\u4f55\u4fdd\u8bc1\u672c\u5730\u7f13\u5b58\u7684\u4e00\u81f4\u6027\uff1f<\/span><\/h2>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u4f7f\u7528\u672c\u5730\u7f13\u5b58\u6700\u5927\u7684\u95ee\u9898\u5c31\u662f\u4e00\u81f4\u6027\u95ee\u9898\uff0c\u6240\u8c13\u7684\u4e00\u81f4\u6027\u95ee\u9898\u6307\u7684\u662f\u5f53\u6570\u636e\u5e93\u53d1\u751f\u6570\u636e\u53d8\u66f4\u65f6\uff0c\u7f13\u5b58\u4e5f\u8981\u8ddf\u7740\u4e00\u8d77\u53d8\u66f4\u3002\u800c\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u6bcf\u53f0\u673a\u5668\u90fd\u6709\u81ea\u5df1\u7684\u672c\u5730\u7f13\u5b58\uff0c\u6240\u4ee5\u60f3\u8981\u4fdd\u8bc1\uff08\u672c\u5730\u7f13\u5b58\u7684\uff09\u4e00\u81f4\u6027\u662f\u4e00\u4e2a\u6bd4\u8f83\u96be\u7684\u95ee\u9898\uff0c\u4f46\u901a\u8fc7\u4ee5\u4e0b\u624b\u6bb5\u53ef\u4ee5\u6700\u5927\u7a0b\u5ea6\u7684\u4fdd\u8bc1\u672c\u5730\u7f13\u5b58\u7684\u4e00\u81f4\u6027\u95ee\u9898\u3002<\/p>\n

\uff081\uff09\u8bbe\u7f6e\u672c\u5730\u7f13\u5b58\u77ed\u65f6\u95f4\u5185\u5931\u6548<\/span><\/h3>\n

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\uff082\uff09\u901a\u8fc7\u914d\u7f6e\u4e2d\u5fc3\u534f\u8c03\u548c\u540c\u6b65<\/span><\/h3>\n

\u901a\u8fc7\u5fae\u670d\u52a1\u4e2d\u7684\u914d\u7f6e\u4e2d\u5fc3\uff08\u4f8b\u5982 Nacos\uff09\u6765\u534f\u8c03\uff0c\u56e0\u4e3a\u6240\u6709\u670d\u52a1\u5668\u90fd\u4f1a\u8fde\u63a5\u5230\u914d\u7f6e\u4e2d\u5fc3\uff0c\u6240\u4ee5\u5f53\u6570\u636e\u4fee\u6539\u4e4b\u540e\uff0c\u53ef\u4ee5\u4fee\u6539\u914d\u7f6e\u4e2d\u5fc3\u7684\u914d\u7f6e\uff0c\u7136\u540e\u914d\u7f6e\u4e2d\u5fc3\u518d\u628a\u914d\u7f6e\u53d8\u66f4\u7684\u4e8b\u4ef6\u63a8\u9001\u7ed9\u5404\u4e2a\u670d\u52a1\uff0c\u5404\u4e2a\u670d\u52a1\u611f\u77e5\u5230\u914d\u7f6e\u4e2d\u5fc3\u7684\u914d\u7f6e\u53d1\u751f\u66f4\u6539\u4e4b\u540e\uff0c\u518d\u66f4\u65b0\u81ea\u5df1\u7684\u672c\u5730\u7f13\u5b58\uff0c\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86\u672c\u5730\u7f13\u5b58\u7684\u6570\u636e\u4e00\u81f4\u6027\u3002<\/p>\n

\uff083\uff09\u672c\u5730\u7f13\u5b58\u81ea\u52a8\u66f4\u65b0\u529f\u80fd<\/span><\/h3>\n

\u4f7f\u7528\u672c\u5730\u7f13\u5b58\u6846\u67b6\u7684\u81ea\u52a8\u66f4\u65b0\u529f\u80fd\uff0c\u4f8b\u5982 Caffeine \u4e2d\u7684 refresh \u529f\u80fd\u6765\u81ea\u52a8\u5237\u65b0\u7f13\u5b58\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u8bbe\u7f6e\u5f88\u77ed\u7684\u65f6\u95f4\u6765\u66f4\u65b0\u6700\u65b0\u7684\u6570\u636e\uff0c\u4ece\u800c\u4e5f\u80fd\u5c3d\u53ef\u80fd\u7684\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u5982\u4e0b\u4ee3\u7801\u6240\u793a\uff1a<\/p>\n

\/\/ \u521b\u5efa Caffeine \u7f13\u5b58\u5b9e\u4f8b\nCache<String, String> caffeineCache = Caffeine.newBuilder()\n\/\/ \u8bbe\u7f6e\u7f13\u5b58\u9879\u5728 5s \u540e\u5f00\u59cb\u81ea\u52a8\u66f4\u65b0\n.refreshAfterWrite(5, TimeUnit.SECONDS)\n\/\/ \u81ea\u5b9a\u4e49\u7f13\u5b58\u66f4\u65b0\u903b\u8f91\uff08\u5373\u83b7\u53d6\u65b0\u503c\u903b\u8f91\uff09\n.build(new CacheLoader<String, String>() {\n    @Override\n    public void reload(String key, String oldValue) throws Exception {\n        \/\/ \u6a21\u62df\u66f4\u65b0\u7f13\u5b58\u7684\u64cd\u4f5c\n        updateCache(key, oldValue);\n    }\n});<\/code><\/pre>\n
2\u3001\u5b9e\u9645\u5de5\u4f5c\u4e2d\u4f1a\u4f7f\u7528\u54ea\u79cd\u65b9\u6848\uff1f<\/span><\/h2>\n
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    \n
  • \u5982\u679c\u5bf9\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u4e0d\u662f\u5f88\u9ad8\uff0c\u5e76\u4e14\u7a0b\u5e8f\u7684\u5e76\u53d1\u538b\u529b\u4e0d\u5927\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u4f7f\u7528\u65b9\u6848 1\uff0c\u4e5f\u5c31\u662f\u8bbe\u7f6e\u672c\u5730\u7f13\u5b58\u77ed\u65f6\u95f4\u5185\u5931\u6548\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u56e0\u4e3a\u5b83\u7684\u5b9e\u73b0\u6700\u7b80\u5355\u3002<\/li>\n
  • \u5982\u679c\u5bf9\u6570\u636e\u7684\u4e00\u81f4\u6027\u8981\u6c42\u6781\u9ad8\uff0c\u4e14\u6709\u914d\u7f6e\u4e2d\u5fc3\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4f7f\u7528\u914d\u7f6e\u4e2d\u5fc3\u534f\u8c03\u548c\u540c\u6b65\u672c\u5730\u7f13\u5b58\u3002<\/li>\n
  • \u76f8\u53cd\uff0c\u5982\u679c\u5bf9\u4e00\u81f4\u6027\u8981\u6c42\u6ca1\u6709\u90a3\u4e48\u9ad8\uff0c\u4e14\u4e3a\u9ad8\u5e76\u53d1\u7684\u7cfb\u7edf\uff0c\u90a3\u4e48\u53ef\u4ee5\u91c7\u7528\u672c\u5730\u7f13\u5b58\u7684\u81ea\u52a8\u66f4\u65b0\u529f\u80fd\u6765\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n
    \u5c0f\u7ed3<\/span><\/h2>\n
    \u5728\u591a\u7ea7\u7f13\u5b58\u4e2d\uff0c\u672c\u5730\u7f13\u5b58\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u7ec4\u6210\u90e8\u5206\uff0c\u800c\u60f3\u8981\u4fdd\u8bc1\u672c\u5730\u7f13\u5b58\u7684\u6570\u636e\u4e00\u81f4\u6027\uff0c\u53ef\u80fd\u91c7\u7528\uff1a\u8bbe\u7f6e\u8f83\u77ed\u7684\u672c\u5730\u7f13\u5b58\u8fc7\u671f\u65f6\u95f4\u3001\u901a\u8fc7\u914d\u7f6e\u4e2d\u5fc3\u6765\u534f\u8c03\u548c\u540c\u6b65\u672c\u5730\u7f13\u5b58\uff0c\u4ee5\u53ca\u4f7f\u7528\u672c\u5730\u7f13\u5b58\u6846\u67b6\u7684\u81ea\u52a8\u66f4\u65b0\u529f\u80fd\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u7b49\u89e3\u51b3\u65b9\u6848\uff0c\u800c\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\uff0c\u9009\u62e9\u7684\u89e3\u51b3\u65b9\u6848\u4e5f\u662f\u4e0d\u540c\u7684\u3002<\/p>\n
    \u8bfe\u540e\u601d\u8003<\/span><\/h2>\n
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