MEMFLUSH(1)

NAME
memflush - libmemcached Documentation

SYNOPSIS

memflush [options]

Reset a server or list of servers

DESCRIPTION

memflush resets the contents of memcached(1) servers.

WARNING: This means that all data in the specified servers will be deleted.

OPTIONS

--help
    Display help.

--version
    Display version.

--quiet
    Operate quietly.

--verbose
    Operate more verbosely.

--debug
    See --verbose.

--servers <list of servers>
    Specify the list of servers as hostname[:port][,hostname[:port]...].

--binary
    Enable binary protocol.

--username <username>
    Use username for SASL authentication.

--password <password>
    Use password for SASL authentication.

--expire <expiration>
    Use expiration seconds (or a UNIX timestamp).

    NOTE: Using an expiration time (period), all keys, which have not bean updated until expiration will cease to exist.

    Quoting the memcached protocol documentation, it states: Its effect is to invalidate all existing items immediately (by default) or after the expiration specified. After invalidation none of the items will be returned in response to a retrieval command (unless it's stored again under the same key after flush_all has invalidated the items).

    The most precise definition of what flush_all does is the following: it causes all items whose update time is earlier than the time at which flush_all was set to be executed to be ignored for retrieval purposes.

    The intent of flush_all with a delay, was that in a setting where you have a pool of memcached servers, and you need to flush all content, you have the option of not resetting all memcached servers at the same time (which could e.g. cause a spike in database load with all clients suddenly needing to recreate content that would otherwise have been found in the memcached daemon).

ENVIRONMENT

MEMCACHED_SERVERS
    Specify the list of servers.

SEE ALSO

memcached(1) libmemcached(3)

•   /libmemcached

•   /libmemcached/memcached_flush