Question

How to disconnect to redis server using hiredis API?
There is API to connect but I can’t find any function to close the connection?
Does redisFree will automatically do this ?

Answer 1

redisFree() will indeed close the connection, and deallocate memory for all attached objects.

When in doubt, you can look at the source code. It is quite easy to understand.

void redisFree(redisContext *c) {
    if (c->fd > 0)
        close(c->fd);
    if (c->obuf != NULL)
        sdsfree(c->obuf);
    if (c->reader != NULL)
        redisReaderFree(c->reader);
    free(c);
}