the evil hat (evilhat) wrote in suggestions,
the evil hat
evilhat
suggestions

New client protocol mode: serverload

Title
New client protocol mode: serverload

Short, concise description of the idea
Add a new client protocol mode that would return the load on the server, thus allowing clients to modify their behavior based on server status.

Full description of the idea
Add a mode to the client protocol that allows server load to be returned in some easily-parsable, easily-interpreted way. (Whether this is a number, or something like "low", "medium", "high", "danger", whatever, I leave to the wisdom of others.) Also allow clients to pass a key (serverload=1, or whatever) in the login protocol mode in order to obtain the server load at login.

An ordered list of benefits

  • Allows client authors to create clients that modify their behavior based on the server load.
  • Example: Client increases checkfriends polling interval (or turns it off entirely) under conditions of high load.
  • Example: Client queues posts for later posting under conditions of high load.
  • Example: Client looks at local cache of moods, friends groups, communities, etc. rather than issuing server query to download them.
  • An ordered list of problems/issues involved

  • Potentially reduces load on the servers during high loads, by causing clients to be respectful of load conditions.
  • Reduces user frustration to slow server responses, by having client mask some of the behavior caused by high loads.
  • An organized list, or a few short paragraphs detailing suggestions for implementation

  • Add new client protocol mode to both flat and XMLRPC interfaces.
  • Base "load" on some easily-polled system metric (system load directly, number of database queries/second, or some combination thereof).
  • Load metric returned should respect the ljfastserver cookie, since presumably the paid and free servers may be operating under different degrees of load.
  • Tags: ~ historical
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