Function RM_UnlinkKey

app/redis-6.2.6/src/module.c:2349–2356

If the key is open for writing, unlink it (that is delete it in a * non-blocking way, not reclaiming memory immediately) and setup the key to * accept new writes as an empty key (that will be created on demand). * On success REDISMODULE_OK is returned. If the key is not open for * writing REDISMODULE_ERR is returned. */

 * On success REDISMODULE_OK is returned. If the key is not open for
 * writing REDISMODULE_ERR is returned. */
int RM_UnlinkKey(RedisModuleKey *key) {
    if (!(key->mode & REDISMODULE_WRITE)) return REDISMODULE_ERR;
    if (key->value) {
        dbAsyncDelete(key->db,key->key);
        key->value = NULL;
    }
    return REDISMODULE_OK;
}

/* Return the key expire value, as milliseconds of remaining TTL.
 * If no TTL is associated with the key or if the key is empty,