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REPLCONF ACK command.

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This special command is used by the slave to inform the master the
amount of replication stream it currently consumed.

it does not return anything so that we not need to consume additional
bandwidth needed by the master to reply something.

The master can do a number of things knowing the amount of stream
processed, such as understanding the "lag" in bytes of the slave, verify
if a given command was already processed by the slave, and so forth.
This commit is contained in:
antirez
2013-05-25 00:37:56 +02:00
parent 0387f86947
commit 1e77b77de4
3 changed files with 17 additions and 0 deletions
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2
src/networking.c
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@ -88,6 +88,8 @@ redisClient *createClient(int fd) {
c->authenticated = 0;
c->replstate = REDIS_REPL_NONE;
c->reploff = 0;
c->repl_ack_off = 0;
c->repl_ack_time = 0;
c->slave_listening_port = 0;
c->reply = listCreate();
c->reply_bytes = 0;