Function delKeysInSlot

app/redis-6.2.6/src/db.c:1986–2005

Remove all the keys in the specified hash slot. * The number of removed items is returned. */

/* Remove all the keys in the specified hash slot.
 * The number of removed items is returned. */
unsigned int delKeysInSlot(unsigned int hashslot) {
    raxIterator iter;
    int j = 0;
    unsigned char indexed[2];

    indexed[0] = (hashslot >> 8) & 0xff;
    indexed[1] = hashslot & 0xff;
    raxStart(&iter,server.cluster->slots_to_keys);
    while(server.cluster->slots_keys_count[hashslot]) {
        raxSeek(&iter,">=",indexed,2);
        raxNext(&iter);

        robj *key = createStringObject((char*)iter.key+2,iter.key_len-2);
        dbDelete(&server.db[0],key);
        decrRefCount(key);
        j++;
    }
    raxStop(&iter);
    return j;
}

unsigned int countKeysInSlot(unsigned int hashslot) {
    return server.cluster->slots_keys_count[hashslot];