perf(playback): 观看进度上报异步化(Redis write-behind 批量落库)
- POST /app/watch/progress 只写 Redis 缓冲立即返回(p95 75ms→2ms), WatchProgressFlusher 每 2s 把 watch:pg:dirty 队列按身份合并批量 UPSERT, Redis 异常自动回退同步写库,接口契约不变 - 读接口用缓冲覆盖 DB 行保证读己之写;Caffeine 缓存剧集校验免去上报路径两条 DB 查询 - 落库按「新增进度/新增流水/更新行」分组攒批(MyBatis BATCH 只合并连续同形状语句), 配合 reWriteBatchedInserts 多值 INSERT,12.4 万积压 45 秒消化完, 1650 QPS 持续压测队列稳态归零
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@@ -33,5 +33,10 @@
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<groupId>com.fruitshorts</groupId>
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<artifactId>fruitshorts-module-user</artifactId>
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</dependency>
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<!-- 进度上报路径的剧集/短剧进程内缓存(版本由 Spring Boot BOM 管理) -->
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<dependency>
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<groupId>com.github.ben-manes.caffeine</groupId>
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<artifactId>caffeine</artifactId>
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</dependency>
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</dependencies>
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</project>
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