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Merge pull request #3949 from spinlock/unstable-rdb-encoding

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rdb: saving skiplist in reversed order to accelerate the deserialisation process
This commit is contained in:
Salvatore Sanfilippo 2017-04-18 10:56:57 +02:00 committed by GitHub
commit 0a942f1751
1 changed files with 8 additions and 7 deletions
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15
src/rdb.c
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@ -704,23 +704,24 @@ ssize_t rdbSaveObject(rio *rdb, robj *o) {
nwritten += n;
} else if (o->encoding == OBJ_ENCODING_SKIPLIST) {
zset *zs = o->ptr;
dictIterator *di = dictGetIterator(zs->dict);
dictEntry *de;
zskiplist *zsl = zs->zsl;
if ((n = rdbSaveLen(rdb,dictSize(zs->dict))) == -1) return -1;
if ((n = rdbSaveLen(rdb,zsl->length)) == -1) return -1;
nwritten += n;
while((de = dictNext(di)) != NULL) {
sds ele = dictGetKey(de);
double *score = dictGetVal(de);
zskiplistNode *zn = zsl->tail;
while (zn != NULL) {
sds ele = zn->ele;
double *score = &zn->score;
if ((n = rdbSaveRawString(rdb,(unsigned char*)ele,sdslen(ele)))
== -1) return -1;
nwritten += n;
if ((n = rdbSaveBinaryDoubleValue(rdb,*score)) == -1) return -1;
nwritten += n;
zn = zn->backward;
}
dictReleaseIterator(di);
} else {
serverPanic("Unknown sorted set encoding");
}