From 3585b3910fa850671be14a401f0c366a26c11500 Mon Sep 17 00:00:00 2001
From: Ilya Lisov <ilya.lisov.yt@gmail.com>
Date: Mon, 22 Jan 2024 11:31:19 +0300
Subject: [PATCH] #20 Change Map to thread-safe implementation

---
 .../io/github/ilyalisov/jwt/storage/TokenStorageImpl.java | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/java/io/github/ilyalisov/jwt/storage/TokenStorageImpl.java b/src/main/java/io/github/ilyalisov/jwt/storage/TokenStorageImpl.java
index 9e48058..ef9be47 100644
--- a/src/main/java/io/github/ilyalisov/jwt/storage/TokenStorageImpl.java
+++ b/src/main/java/io/github/ilyalisov/jwt/storage/TokenStorageImpl.java
@@ -2,25 +2,25 @@
 
 import io.github.ilyalisov.jwt.config.TokenParameters;
 
-import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
- * Basic implementation of TokenStorage. Not thread-safe.
+ * Basic implementation of TokenStorage.
  */
 public class TokenStorageImpl implements TokenStorage {
 
     /**
      * Inner map of key-value pairs.
      */
-    private final Map<String, String> tokens;
+    private final ConcurrentHashMap<String, String> tokens;
 
     /**
      * Creates an object.
      */
     public TokenStorageImpl(
     ) {
-        this.tokens = new HashMap<>();
+        this.tokens = new ConcurrentHashMap<>();
     }
 
     private String subjectTokenKey(