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Replication of scripts as EVALSHA: sha1 caching implemented.

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This code is only responsible to take an LRU-evicted fixed length cache
of SHA1 that we are sure all the slaves received.

In this commit only the implementation is provided, but the Redis core
does not use it to actually send EVALSHA to slaves when possible.
This commit is contained in:
antirez
2013-06-24 10:26:04 +02:00
parent 8328d993e1
commit 9d894b1b8c
3 changed files with 96 additions and 1 deletions
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5
src/redis.h
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@ -706,6 +706,10 @@ struct redisServer {
int slave_priority; /* Reported in INFO and used by Sentinel. */
char repl_master_runid[REDIS_RUN_ID_SIZE+1]; /* Master run id for PSYNC. */
long long repl_master_initial_offset; /* Master PSYNC offset. */
/* Replication script cache. */
dict *repl_scriptcache_dict; /* SHA1 all slaves are aware of. */
list *repl_scriptcache_fifo; /* First in, first out LRU eviction. */
int repl_scriptcache_size; /* Max number of elements. */
/* Limits */
unsigned int maxclients; /* Max number of simultaneous clients */
unsigned long long maxmemory; /* Max number of memory bytes to use */
@ -849,6 +853,7 @@ extern dictType dbDictType;
extern dictType shaScriptObjectDictType;
extern double R_Zero, R_PosInf, R_NegInf, R_Nan;
extern dictType hashDictType;
extern dictType replScriptCacheDictType;
/*-----------------------------------------------------------------------------
* Functions prototypes