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ZPOP: change sync ZPOP to have a count argument instead of N keys.

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Usually blocking operations make a lot of sense with multiple keys so
that we can listen to multiple queues (or whatever the app models) with
a single connection. However in the synchronous case it is more useful
to be able to ask for N elements. This is a change that I also wanted to
perform soon or later in the blocking list variant, but here it is more
natural since there is no reply type difference.
This commit is contained in:
antirez
2018-05-11 18:00:32 +02:00
parent 6efb6c1e06
commit 56bbab238a
3 changed files with 95 additions and 56 deletions
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src/server.h
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@ -1632,7 +1632,7 @@ unsigned long zslGetRank(zskiplist *zsl, double score, sds o);
int zsetAdd(robj *zobj, double score, sds ele, int *flags, double *newscore);
long zsetRank(robj *zobj, sds ele, int reverse);
int zsetDel(robj *zobj, sds ele);
void genericZpopCommand(client *c, robj **keyv, int keyc, int reverse);
void genericZpopCommand(client *c, robj **keyv, int keyc, int where, int emitkey, robj *countarg);
sds ziplistGetObject(unsigned char *sptr);
int zslValueGteMin(double value, zrangespec *spec);
int zslValueLteMax(double value, zrangespec *spec);