diff options
| -rw-r--r-- | plugins/mod_blocklist.lua | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/plugins/mod_blocklist.lua b/plugins/mod_blocklist.lua index add7abb3..a38d2a0f 100644 --- a/plugins/mod_blocklist.lua +++ b/plugins/mod_blocklist.lua @@ -19,11 +19,17 @@ local jid_split = require"util.jid".split; local storage = module:open_store(); local sessions = prosody.hosts[module.host].sessions; --- Cache of blocklists by username may randomly expire at any time +-- First level cache of blocklists by username. +-- Weak table so may randomly expire at any time. local cache = setmetatable({}, { __mode = "v" }); --- Second level of caching, keeps a fixed number of items, --- also anchors items in the above cache +-- Second level of caching, keeps a fixed number of items, also anchors +-- items in the above cache. +-- +-- The size of this affects how often we will need to load a blocklist from +-- disk, which we want to avoid during routing. On the other hand, we don't +-- want to use too much memory either, so this can be tuned by advanced +-- users. TODO use science to figure out a better default, 64 is just a guess. local cache_size = module:get_option_number("blocklist_cache_size", 64); local cache2 = require"util.cache".new(cache_size); |