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STORE variants: SINTER,SUNION,SDIFF,ZUNION use setKey instead of dbDelete+dbAdd (#7489)

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one of the differences (other than consistent code with SORT, GEORADIUS), is that the LFU of the old key is retained.
This commit is contained in:
杨博东 2020-07-11 20:52:41 +08:00 committed by GitHub
parent 279b4a1464
commit e9aba28932
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 19 additions and 23 deletions
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32
src/t_set.c
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@ -895,21 +895,21 @@ void sinterGenericCommand(client *c, robj **setkeys,
if (dstkey) {
/* Store the resulting set into the target, if the intersection
* is not an empty set. */
int deleted = dbDelete(c->db,dstkey);
if (setTypeSize(dstset) > 0) {
dbAdd(c->db,dstkey,dstset);
setKey(c,c->db,dstkey,dstset);
addReplyLongLong(c,setTypeSize(dstset));
notifyKeyspaceEvent(NOTIFY_SET,"sinterstore",
dstkey,c->db->id);
server.dirty++;
} else {
decrRefCount(dstset);
addReply(c,shared.czero);
if (deleted)
notifyKeyspaceEvent(NOTIFY_GENERIC,"del",
dstkey,c->db->id);
if (dbDelete(c->db,dstkey)) {
server.dirty++;
signalModifiedKey(c,c->db,dstkey);
notifyKeyspaceEvent(NOTIFY_GENERIC,"del",dstkey,c->db->id);
}
}
signalModifiedKey(c,c->db,dstkey);
server.dirty++;
decrRefCount(dstset);
} else {
setDeferredSetLen(c,replylen,cardinality);
}
@ -1069,22 +1069,22 @@ void sunionDiffGenericCommand(client *c, robj **setkeys, int setnum,
} else {
/* If we have a target key where to store the resulting set
* create this key with the result set inside */
int deleted = dbDelete(c->db,dstkey);
if (setTypeSize(dstset) > 0) {
dbAdd(c->db,dstkey,dstset);
setKey(c,c->db,dstkey,dstset);
addReplyLongLong(c,setTypeSize(dstset));
notifyKeyspaceEvent(NOTIFY_SET,
op == SET_OP_UNION ? "sunionstore" : "sdiffstore",
dstkey,c->db->id);
server.dirty++;
} else {
decrRefCount(dstset);
addReply(c,shared.czero);
if (deleted)
notifyKeyspaceEvent(NOTIFY_GENERIC,"del",
dstkey,c->db->id);
if (dbDelete(c->db,dstkey)) {
server.dirty++;
signalModifiedKey(c,c->db,dstkey);
notifyKeyspaceEvent(NOTIFY_GENERIC,"del",dstkey,c->db->id);
}
}
signalModifiedKey(c,c->db,dstkey);
server.dirty++;
decrRefCount(dstset);
}
zfree(sets);
}

10
src/t_zset.c
View File

@ -2184,7 +2184,6 @@ void zunionInterGenericCommand(client *c, robj *dstkey, int op) {
robj *dstobj;
zset *dstzset;
zskiplistNode *znode;
int touched = 0;
/* expect setnum input keys to be given */
if ((getLongFromObjectOrReply(c, c->argv[2], &setnum, NULL) != C_OK))
@ -2377,26 +2376,23 @@ void zunionInterGenericCommand(client *c, robj *dstkey, int op) {
serverPanic("Unknown operator");
}
if (dbDelete(c->db,dstkey))
touched = 1;
if (dstzset->zsl->length) {
zsetConvertToZiplistIfNeeded(dstobj,maxelelen);
dbAdd(c->db,dstkey,dstobj);
setKey(c,c->db,dstkey,dstobj);
addReplyLongLong(c,zsetLength(dstobj));
signalModifiedKey(c,c->db,dstkey);
notifyKeyspaceEvent(NOTIFY_ZSET,
(op == SET_OP_UNION) ? "zunionstore" : "zinterstore",
dstkey,c->db->id);
server.dirty++;
} else {
decrRefCount(dstobj);
addReply(c,shared.czero);
if (touched) {
if (dbDelete(c->db,dstkey)) {
signalModifiedKey(c,c->db,dstkey);
notifyKeyspaceEvent(NOTIFY_GENERIC,"del",dstkey,c->db->id);
server.dirty++;
}
}
decrRefCount(dstobj);
zfree(src);
}