bindinfo: change default behavior for bind cache

Signed-off-by: Weizhen Wang <wangweizhen@pingcap.com>
pingcap · Mar 1, 2024 · b070c94 · b070c94
1 parent da7cd99
commit b070c94
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/pkg/bindinfo/binding_cache.go b/pkg/bindinfo/binding_cache.go
@@ -224,6 +224,9 @@ func (c *bindingCache) get(key bindingCacheKey) Bindings {
 	if !hit {
 		return nil
 	}
+	if value == nil {
+		return nil
+	}
 	typedValue := value.(Bindings)
 	return typedValue
 }
@@ -249,6 +252,7 @@ func (c *bindingCache) set(key bindingCacheKey, value Bindings) (ok bool, err er
 			return
 		}
 		c.memTracker.Consume(-calcBindCacheKVMem(evictedKey.(bindingCacheKey), evictedValue.(Bindings)))
+		c.cache.Put(evictedKey, nil)
 	}
 	c.memTracker.Consume(mem)
 	c.cache.Put(key, value)