function-dump.3valkey - Man Page

FUNCTION DUMP

Return the serialized payload of loaded libraries. You can restore the serialized payload later with the valkey-function-restore(7) FUNCTION RESTORE command.

For more information please refer to valkey-functions-intro(7) Introduction to Valkey Functions.

valkey-protocol(7) Bulk string reply: the serialized payload

O(N) where N is the number of functions

@scripting @slow

• Available since: 7.0.0

The following example shows how to dump loaded libraries using FUNCTION DUMP and then it calls valkey-function-flush(7) FUNCTION FLUSH deletes all the libraries. Then, it restores the original libraries from the serialized payload with FUNCTION RESTORE.

127.0.0.1:6379> FUNCTION LOAD "#!lua name=mylib \n server.register_function('myfunc', function(keys, args) return args[1] end)"
"mylib"
127.0.0.1:6379> FUNCTION DUMP
"\xf5\xc3@X@]\x1f#!lua name=mylib \n server.registe\rr_function('my@\x0b\x02', @\x06`\x12\nkeys, args) 6\x03turn`\x0c\a[1] end)\x0c\x00\xba\x98\xc2\xa2\x13\x0e$\a"
127.0.0.1:6379> FUNCTION FLUSH
OK
127.0.0.1:6379> FUNCTION RESTORE "\xf5\xc3@X@]\x1f#!lua name=mylib \n server.registe\rr_function('my@\x0b\x02', @\x06`\x12\nkeys, args) 6\x03turn`\x0c\a[1] end)\x0c\x00\xba\x98\xc2\xa2\x13\x0e$\a"
OK
127.0.0.1:6379> FUNCTION LIST
1) 1) "library_name"
   2) "mylib"
   3) "engine"
   4) "LUA"
   5) "functions"
   6) 1) 1) "name"
         2) "myfunc"
         3) "description"
         4) (nil)
         5) "flags"
         6) (empty array)

eval(3valkey), evalsha(3valkey), evalsha_ro(3valkey), eval_ro(3valkey), fcall(3valkey), fcall_ro(3valkey), function(3valkey), function-delete(3valkey), function-flush(3valkey), function-help(3valkey), function-kill(3valkey), function-list(3valkey), function-load(3valkey), function-restore(3valkey), function-stats(3valkey), script(3valkey), script-debug(3valkey), script-exists(3valkey), script-flush(3valkey), script-help(3valkey), script-kill(3valkey), script-load(3valkey), script-show(3valkey)