Function flushdbCommand

src/db.cpp:831–859

FLUSHDB [ASYNC] * * Flushes the currently SELECTed Redis DB. */

 *
 * Flushes the currently SELECTed Redis DB. */
void flushdbCommand(client *c) {
    int flags;

    if (c->argc == 2)
    {
        if (!strcasecmp(szFromObj(c->argv[1]), "cache"))
        {
            if (g_pserver->m_pstorageFactory == nullptr)
            {
                addReplyError(c, "Cannot flush cache without a storage provider set");
                return;
            }
            c->db->removeAllCachedValues();
            addReply(c,shared.ok);
            return;
        }
    }

    if (getFlushCommandFlags(c,&flags) == C_ERR) return;
    g_pserver->dirty += emptyDb(c->db->id,flags,NULL);
    addReply(c,shared.ok);
#if defined(USE_JEMALLOC)
    /* jemalloc 5 doesn't release pages back to the OS when there's no traffic.
     * for large databases, flushdb blocks for long anyway, so a bit more won't
     * harm and this way the flush and purge will be synchroneus. */
    if (!(flags & EMPTYDB_ASYNC))
        jemalloc_purge();
#endif
}

/* FLUSHALL [ASYNC]
 *