Redis 2.8.20/3.0.1 发布，主要是 BUG 修复。
Redis 3.0.1 主要是修复了 Sentinel 内存泄漏问题（只在某种特定的非常规状态下才能触发）。同时还解决了一个 Lua 输出缓冲限制问题，如果你的 Redis 从不崩溃，那么就没有影响。
现已提供下载： 详细改进请看更新日志： --[ Redis 3.0.1 ] Release date: 5 May 2015
Upgrade urgency: LOW for Redis and Cluster, MODERATE for Sentinel.
* [FIX] Sentinel memory leak due to hiredis fixed. (Salvatore Sanfilippo)
* [FIX] Sentinel memory leak on duplicated instance. (Charsyam)
* [FIX] Redis crash on Lua reaching output buffer limits. (Yossi Gottlieb)
* [FIX] Sentinel flushes config on +slave events. (Bill Anderson)
--[ Redis 2.8.20 ] Release date: 5 May 2015
Upgrade urgency: LOW for Redis, MODERATE for Sentinel.
* [FIX] Sentinel memory leak due to hiredis fixed. (Salvatore Sanfilippo)
* [FIX] Sentinel memory leak on duplicated instance. (Charsyam)
* [FIX] Redis crash on Lua reaching output buffer limits. (Yossi Gottlieb)
* [FIX] Sentinel flushes config on +slave events. (Bill Anderson)
* [FIX] Fixes to diskless replication. (Oran Agra)
* [FIX] Redis (non clustered & clustered) replication bug involving blocking
operations: see issue #2473. (Salvatore Sanfilippo)
* [FIX] Config: missing activerehashing option support in CONFIG SET added.
(Salvatore Sanfilippo, thx to Bill Anderson)
* [FIX] AOF bug unlikely to happen in practice and mostly harmless: child
process segfaults when parent is not reachable via pipe. (Sun He)
* [FIX] Scripting engine now reports an error when misused with Lua debug
hooks, instead of crashing. (Salvatore Sanfilippo)
* [FIX] INFO loading stats: three fixes.
* [FIX] Fixed memory leaks in rdbSaveToSlavesSockets(). (Alon Diamant)
* [NEW] Redis-cli --latency-dist backported from unstable.
(Salvatore Sanfilippo) | 
