[GitHub] [apisix-go-plugin-runner] zdzh commented on issue #43: bug: WARN server/server.go:59 key not found

[GitBox <gi...@apache.org>]

zdzh commented on issue #43:
URL: https://github.com/apache/apisix-go-plugin-runner/issues/43#issuecomment-949234173


   lrucache  should be set `invalid_stale = true`?
   ```lua
   local events_list
   local lrucache = core.lrucache.new({
       type = "plugin",
       ttl = helper.get_conf_token_cache_time(),
   })
   ```
   
   ```lua
   local function new_lru_fun(opts)
       ...
       local item_release = opts and opts.release
       local invalid_stale = opts and opts.invalid_stale    -- false
       local serial_creating = opts and opts.serial_creating
       local lru_obj = lru_new(item_count)
   
       return function (key, version, create_obj_fun, ...)
           if not serial_creating or not can_yield_phases[get_phase()] then
               local cache_obj = fetch_valid_cache(lru_obj, invalid_stale,
                                   item_ttl, item_release, key, version)
               if cache_obj then
                   return cache_obj.val
               end
      .....
   ```
   
   ```lua
   local function fetch_valid_cache(lru_obj, invalid_stale, item_ttl,
                                    item_release, key, version)
       local obj, stale_obj = lru_obj:get(key)
       if obj and obj.ver == version then
           return obj
       end
   
       -- get a expired key in lrucachd  that could not find in go runner
       if not invalid_stale and stale_obj and stale_obj.ver == version then
           lru_obj:set(key, stale_obj, item_ttl)
           return stale_obj
       end
   
       if item_release and obj then  
           item_release(obj.val)
       end
   
       return nil
   end
   ```


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