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releases: add release note for v8.0.0 #16664
releases: add release note for v8.0.0 #16664
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TiDB v8.0.0 版本开始,通过对 Region 打散算法进行性能优化和改进,成功减少了 SST 文件下载和 Ingest 进程之间的相互影响,提升了 DDL 执行效率和统计信息恢复效率等。这些措施充分利用了每个 TiKV 节点的资源进行并行恢复,大幅提升了恢复速度。在实际案例中,单个 TiKV 节点的数据恢复速度稳定在 1.2 GB/s,并且能够在 1 小时内完成对 100 TB 数据的恢复。这项改进功能已在 TiDB v8.0.0 版本正式发布并默认启用。