Function touchCommand

app/redis-6.2.6/src/expire.c:606–611

TOUCH key1 [key2 key3 ... keyN] */

/* TOUCH key1 [key2 key3 ... keyN] */
void touchCommand(client *c) {
    int touched = 0;
    for (int j = 1; j < c->argc; j++)
        if (lookupKeyRead(c->db,c->argv[j]) != NULL) touched++;
    addReplyLongLong(c,touched);
}