Supported Memcached commands

ElastiCache Serverless for Memcached supports all of the memcached commands in open source memcached 1.6 except for the following:

• Client connections require TLS, as a result UDP protocol is not supported.

• Binary protocol is not supported, as it is officially deprecated in memcached 1.6.

• GET/GETS commands are limited to 16KB to avoid potential DoS attack to the server with fetching large number of keys.

• Delayed flush_all command will be rejected with CLIENT_ERROR.

• Commands that configure the engine or reveal internal information about engine state or logs are not supported, such as:

  • For STATS command, only stats and stats reset are supported. Other variations will return ERROR

  • lru / lru_crawler - modification for LRU and LRU crawler settings

  • watch - watches memcached server logs

  • verbosity - configures the server log level

  • me - meta debug (me) command is not supported