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Optimize the performance of msetnx command by call lookupkey only once (#11594)

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This is a small addition to #9640
It improves performance by avoiding double lookup of the the key.
This commit is contained in:
judeng 2023-01-03 15:37:47 +08:00 committed by GitHub
parent d2d6bc18eb
commit 884ca601b2
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1 changed files with 3 additions and 1 deletions
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src/t_string.c
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@ -553,6 +553,7 @@ void mgetCommand(client *c) {
void msetGenericCommand(client *c, int nx) {
int j;
int setkey_flags = 0;
if ((c->argc % 2) == 0) {
addReplyErrorArity(c);
@ -568,11 +569,12 @@ void msetGenericCommand(client *c, int nx) {
return;
}
}
setkey_flags |= SETKEY_DOESNT_EXIST;
}
for (j = 1; j < c->argc; j += 2) {
c->argv[j+1] = tryObjectEncoding(c->argv[j+1]);
setKey(c,c->db,c->argv[j],c->argv[j+1],0);
setKey(c, c->db, c->argv[j], c->argv[j + 1], setkey_flags);
notifyKeyspaceEvent(NOTIFY_STRING,"set",c->argv[j],c->db->id);
}
server.dirty += (c->argc-1)/2;