{"record":{"id":"eee657736097241e","repo":"fish2018/pansou","slug":"v-eee657","errorCode":null,"errorMessage":"内存缓存更新失败: %v","messagePattern":"内存缓存更新失败: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"service/search_service.go","lineNumber":299,"sourceCode":"\t\t\t\tdisplayKey := key[:8] + \"...\"\n\t\t\t\tif keyword != \"\" {\n\t\t\t\t\tfmt.Printf(\"[异步插件 %s] 初始缓存创建: %s(关键词:%s) | 结果数: %d\\n\", pluginName, displayKey, keyword, len(newResults))\n\t\t\t\t} else {\n\t\t\t\t\tfmt.Printf(\"[异步插件 %s] 初始缓存创建: %s | 结果数: %d\\n\", pluginName, key, len(newResults))\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// 序列化合并后的结果\n\t\tdata, err := mainCache.GetSerializer().Serialize(finalResults)\n\t\tif err != nil {\n\t\t\tfmt.Printf(\"[缓存更新] 序列化失败: %s | 错误: %v\\n\", key, err)\n\t\t\treturn err\n\t\t}\n\n\t\t// 先更新内存缓存（立即可见）\n\t\tif err := mainCache.SetMemoryOnly(key, data, ttl); err != nil {\n\t\t\treturn fmt.Errorf(\"内存缓存更新失败: %v\", err)\n\t\t}\n\n\t\t// 使用新的缓存写入管理器处理磁盘写入（智能批处理）\n\t\tif cacheWriteManager := globalCacheWriteManager; cacheWriteManager != nil {\n\t\t\toperation := &cache.CacheOperation{\n\t\t\t\tKey:        key,\n\t\t\t\tData:       finalResults, // 使用原始数据而不是序列化后的\n\t\t\t\tTTL:        ttl,\n\t\t\t\tIsFinal:    isFinal,\n\t\t\t\tPluginName: pluginName,\n\t\t\t\tKeyword:    keyword,\n\t\t\t\tPriority:   2, // 中等优先级\n\t\t\t\tTimestamp:  time.Now(),\n\t\t\t\tDataSize:   len(data), // 序列化后的数据大小\n\t\t\t}\n\n\t\t\t// 根据是否为最终结果设置优先级\n\t\t\tif isFinal {","sourceCodeStart":281,"sourceCodeEnd":317,"githubUrl":"https://github.com/fish2018/pansou/blob/beaa56133755a548ebc51b090b3816e2ae044aa6/service/search_service.go#L281-L317","documentation":"In the search cache write path, after serializing the value, the service updates the in-memory cache via mainCache.SetMemoryOnly and wraps any failure with this message. The disk write never proceeds, so a memory-cache infrastructure problem aborts the cache refresh.","triggerScenarios":"mainCache.SetMemoryOnly returns an error while storing the serialized search result under key with the given ttl — e.g. the in-memory cache is closed, at capacity and refusing writes, or encountered an internal store error.","commonSituations":"Cache evicted/closed during shutdown while a refresh is in flight; memory pressure causing the cache to reject new entries; misconfigured max-size making all writes fail; ttl/value constraints violated by the cache implementation.","solutions":["Inspect the wrapped error from SetMemoryOnly to see the store's specific failure reason.","Check cache configuration: max entries/bytes, ttl bounds, and whether the cache instance is properly initialized before use.","Log and continue instead of failing the whole operation — a memory-cache miss only costs performance, not correctness.","Verify shutdown ordering so globalCacheWriteManager/mainCache outlive in-flight refreshes."],"exampleFix":"// before\nif err := mainCache.SetMemoryOnly(key, data, ttl); err != nil {\n    return fmt.Errorf(\"内存缓存更新失败: %v\", err)\n}\n// after\nif err := mainCache.SetMemoryOnly(key, data, ttl); err != nil {\n    log.Printf(\"[缓存更新] 内存缓存写入失败(忽略): %v\", err) // degrade gracefully\n}","handlingStrategy":"try-catch","validationCode":"if mainCache == nil {\n    return fmt.Errorf(\"cache not initialized\")\n}","typeGuard":null,"tryCatchPattern":"if err := mainCache.SetMemoryOnly(key, data, ttl); err != nil {\n    log.Printf(\"memory cache set failed (non-fatal): %v\", err)\n    // proceed to disk write anyway\n}","preventionTips":["Treat memory-cache write failures as non-fatal — degrade to disk cache.","Initialize caches before serving traffic and order shutdown correctly.","Monitor cache capacity/config so writes aren't silently rejected."],"tags":["cache","memory","write"],"backgroundTag":"database-write-failed","analyzedSha":"beaa56133755a548ebc51b090b3816e2ae044aa6","analyzedAt":"2026-09-07T00:31:18.025Z","contentChangedAt":"2026-09-07T00:31:18.025Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}