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MIGRATE TCP connections caching.

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By caching TCP connections used by MIGRATE to chat with other Redis
instances a 5x performance improvement was measured with
redis-benchmark against small keys.

This can dramatically speedup cluster resharding and other processes
where an high load of MIGRATE commands are used.
This commit is contained in:
antirez
2012-11-12 00:45:10 +01:00
parent 5513397de7
commit e23d281e48
3 changed files with 139 additions and 17 deletions
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4
src/redis.h
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@ -646,7 +646,8 @@ struct redisServer {
list *clients_to_close; /* Clients to close asynchronously */
list *slaves, *monitors; /* List of slaves and MONITORs */
redisClient *current_client; /* Current client, only used on crash report */
char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
char neterr[ANET_ERR_LEN]; /* Error buffer for anet.c */
dict *migrate_cached_sockets;/* MIGRATE cached sockets */
/* RDB / AOF loading information */
int loading; /* We are loading data from disk if true */
off_t loading_total_bytes;
@ -1174,6 +1175,7 @@ int clusterAddNode(clusterNode *node);
void clusterCron(void);
clusterNode *getNodeByQuery(redisClient *c, struct redisCommand *cmd, robj **argv, int argc, int *hashslot, int *ask);
void clusterPropagatePublish(robj *channel, robj *message);
void migrateCloseTimedoutSockets(void);
/* Sentinel */
void initSentinelConfig(void);