This integer specifies the size of the largest request the database server can accept. The default value is in bytes,
but you can use k, m, or g to specify units of kilobytes, megabytes, or gigabytes, respectively. The value 0 disables this limit, but should be used
with extreme caution. Without this limit, a rogue client could overload the database server or cause it to run out of memory.
If the size of a request exceeds this limit, the connection is closed and the client returns a response indicating that the
request is too large. This value limits only the size of the request, not that of the response.