fix(mlcache) return nil from cb nil after mutex

thibaultcha · Apr 26, 2017 · 591be2b · 591be2b
1 parent 17cd293
commit 591be2b
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/lib/resty/mlcache.lua b/lib/resty/mlcache.lua
@@ -310,8 +310,16 @@ function _M:get(key, opts, cb, ...)
 
     -- check for another worker's success at running the callback
 
-    data = shmlru_get(self, key, ttl, neg_ttl)
+    data, err = shmlru_get(self, key, ttl, neg_ttl)
+    if err then
+        return unlock_and_ret(lock, nil, err)
+    end
+
     if data then
+        if data == CACHE_MISS_SENTINEL_LRU then
+            return unlock_and_ret(lock, nil)
+        end
+
         return unlock_and_ret(lock, data)
     end