Function persistCommand

app/redis-6.2.6/src/expire.c:590–603

PERSIST key */

/* PERSIST key */
void persistCommand(client *c) {
    if (lookupKeyWrite(c->db,c->argv[1])) {
        if (removeExpire(c->db,c->argv[1])) {
            signalModifiedKey(c,c->db,c->argv[1]);
            notifyKeyspaceEvent(NOTIFY_GENERIC,"persist",c->argv[1],c->db->id);
            addReply(c,shared.cone);
            server.dirty++;
        } else {
            addReply(c,shared.czero);
        }
    } else {
        addReply(c,shared.czero);
    }
}

/* TOUCH key1 [key2 key3 ... keyN] */
void touchCommand(client *c) {