[sr-dev] git:master:79d07fe0: modules: readme files regenerated - presence ... [skip ci]

Module: kamailio Branch: master Commit: 79d07fe00af8e30910a4e1b23b641ebcc96f0895 URL: https://github.com/kamailio/kamailio/commit/79d07fe00af8e30910a4e1b23b641eb… Author: Kamailio Dev <kamailio.dev(a)kamailio.org> Committer: Kamailio Dev <kamailio.dev(a)kamailio.org> Date: 2020-04-20T17:31:14+02:00 modules: readme files regenerated - presence ... [skip ci] --- Modified: src/modules/presence/README --- Diff: https://github.com/kamailio/kamailio/commit/79d07fe00af8e30910a4e1b23b641eb… Patch: https://github.com/kamailio/kamailio/commit/79d07fe00af8e30910a4e1b23b641eb… --- diff --git a/src/modules/presence/README b/src/modules/presence/README index d0f3e6fa1a..c4ba8ca1b1 100644 --- a/src/modules/presence/README +++ b/src/modules/presence/README @@ -604,12 +604,18 @@ modparam("presence", "subs_db_mode", 1) 3.19. publ_cache (int) - To improve performance, the presence module holds by default a publish - cache that says if a certain publication exists in database. This is - only a list of URI + event, so it does not use much memory. The cache - is used when a Subscription is received to check if there is any - published state in database. This way unnecessary queries in presentity - table are avoided. + To improve performance, the presence module can operate in a couple of + modes related to how PUBLISH data is stored. If publ_cache is 0, then + no information is store in memory. + + If publ_cache is 1, then the module keeps in memory an index of the + records stored in database, In this mode it keeps only the list of URIs + and events, so it does not use much memory. The cache is used when a + Subscription is received to check if there is any published state in + database. This way unnecessary queries in presentity table are avoided. + + If publ_cache is 2, then the module keeps everything related to PUBLISH + requests in memory, not storing anything in the database. Setting this parameter to 0 will disable the usage of the publish cache. This is desirable when you have more servers sharing the same