From 731a057075e6f23c737eae08b4ccf7dfa2150e27 Mon Sep 17 00:00:00 2001
From: aping <czp010443@aliyun.com>
Date: Tue, 7 Nov 2023 17:16:23 +0800
Subject: [PATCH] fix: file cache, concurrent map writes (#116)

---
 driver_file.go | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/driver_file.go b/driver_file.go
index beba85f..4d990a7 100644
--- a/driver_file.go
+++ b/driver_file.go
@@ -56,15 +56,15 @@ func (c *FileCache) Has(key string) bool {
 
 // Get value by key
 func (c *FileCache) Get(key string) any {
-	c.lock.RLock()
-	defer c.lock.RUnlock()
-
 	return c.get(key)
 }
 
 func (c *FileCache) get(key string) any {
 	// read cache from memory
-	if val := c.MemoryCache.get(key); val != nil {
+	c.lock.RLock()
+	val := c.MemoryCache.get(key)
+	c.lock.RUnlock()
+	if val != nil {
 		return val
 	}
 
@@ -87,7 +87,9 @@ func (c *FileCache) get(key string) any {
 		return nil
 	}
 
+	c.lock.Lock()
 	c.caches[key] = item // save to memory.
+	c.lock.Unlock()
 	return item.Val
 }