"SDSLEN <key> -- Show low level SDS string info representing key and value.",
"SEGFAULT -- Crash the server with sigsegv.",
"SET-ACTIVE-EXPIRE <0|1> -- Setting it to 0 disables expiring keys in background when they are not accessed (otherwise the Redis behavior). Setting it to 1 reenables back the default.",
"AOF-FLUSH-SLEEP <microsec> -- Server will sleep before flushing the AOF, this is used for testing",
"SLEEP <seconds> -- Stop the server for <seconds>. Decimals allowed.",
"STRUCTSIZE -- Return the size of different Redis core C structures.",
"ZIPLIST <key> -- Show low level info about the ziplist encoding.",