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fix(CubeProxy): initialize random seed in worker phase #138

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kinwin-ustc merged 1 commit into from
May 9, 2026
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fix(CubeProxy): initialize random seed in worker phase #138

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7 changes: 7 additions & 0 deletions CubeProxy/lua/init_worker_phase.lua
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Original file line number Diff line number Diff line change
@@ -1,3 +1,10 @@
-- In OpenResty, math.randomseed should be called in the init_worker phase.
-- Without this, all worker processes would start with the same seed (typically 1),
-- causing math.random() to return the same sequence of values across all workers.
-- This is critical for cache TTL jitter and other randomized behaviors to ensure
-- they are truly distributed and don't lead to synchronized stampedes.
math.randomseed(ngx.now() * 1000 + ngx.worker.id())

local function monitor_cache_usage()
local cache_free_space = ngx.shared.local_cache:free_space()
ngx.shared.local_cache:set("cache_free_space", cache_free_space)
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