diff --git a/server/package.json b/server/package.json
index ebba413..93bd0fc 100644
--- a/server/package.json
+++ b/server/package.json
@@ -18,7 +18,8 @@
     "pg": "^8.7.3",
     "redis": "^4.2.0",
     "reflect-metadata": "^0.1.13",
-    "typeorm": "^0.3.7"
+    "typeorm": "^0.3.7",
+    "uuid": "^8.3.2"
   },
   "devDependencies": {
     "@types/bcrypt": "^5.0.0",
@@ -26,6 +27,7 @@
     "@types/jest": "^28.1.4",
     "@types/jsonwebtoken": "^8.5.8",
     "@types/node": "^18.0.3",
+    "@types/uuid": "^8.3.4",
     "concurrently": "^7.2.2",
     "jest": "^28.1.2",
     "nodemon": "^2.0.19",
diff --git a/server/src/repository/__tests__/session.repository.spec.ts b/server/src/repository/__tests__/session.repository.spec.ts
new file mode 100644
index 0000000..c33c40a
--- /dev/null
+++ b/server/src/repository/__tests__/session.repository.spec.ts
@@ -0,0 +1,42 @@
+import { RedisConnection } from "../../infra/redis";
+import { sessionRepository } from "../session.repository";
+import { v4 as uuid } from "uuid";
+describe("sessionRepository", () => {
+  beforeAll(async () => {
+    await RedisConnection.connect();
+  });
+  afterAll(async () => {
+    await RedisConnection.disconnect();
+  });
+
+  describe("saveSession", () => {
+    it("should save a new session on redis", async () => {
+      const sessionToken = uuid();
+
+      expect(await sessionRepository.saveSession(sessionToken)).toBeTruthy();
+      expect(await sessionRepository.sessionExists(sessionToken)).toBeTruthy();
+    });
+  });
+  describe("sessionExists", () => {
+    it("should return true if session exists", async () => {
+      const sessionToken = uuid();
+
+      expect(await sessionRepository.saveSession(sessionToken)).toBeTruthy();
+      expect(await sessionRepository.sessionExists(sessionToken)).toBeTruthy();
+    });
+
+    it("should return false if session does not exists", async () => {
+      const sessionToken = uuid();
+      expect(await sessionRepository.sessionExists(sessionToken)).toBeFalsy();
+    });
+  });
+  describe("deleteByToken", () => {
+    it("should remove session from redis", async () => {
+      const sessionToken = uuid();
+
+      await sessionRepository.saveSession(sessionToken);
+      expect(await sessionRepository.deleteSession(sessionToken)).toBeTruthy();
+      expect(await sessionRepository.sessionExists(sessionToken)).toBeFalsy();
+    });
+  });
+});
diff --git a/server/src/repository/session.repository.ts b/server/src/repository/session.repository.ts
index 159253d..57aca68 100644
--- a/server/src/repository/session.repository.ts
+++ b/server/src/repository/session.repository.ts
@@ -3,13 +3,13 @@ import { RedisConnection } from "../infra/redis"
 const sessionExists = async (jwt: string): Promise<boolean> => {
   const result = await RedisConnection.get(jwt)
 
-  return result == "valid"
+  return result === "EXIST"
 }
 
 const saveSession = async (jwt: string): Promise<boolean> => {
-  const result = await RedisConnection.set(jwt, 'valid')
+  const result = await RedisConnection.set(jwt, 'EXIST')
 
-  return result == "valid"
+  return result === "OK"
 }
 
 const deleteSession = async (jwt: string): Promise<boolean> => {
diff --git a/server/yarn.lock b/server/yarn.lock
index d073038..389afde 100644
--- a/server/yarn.lock
+++ b/server/yarn.lock
@@ -794,6 +794,11 @@
   resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-2.0.1.tgz#20f18294f797f2209b5f65c8e3b5c8e8261d127c"
   integrity sha512-Hl219/BT5fLAaz6NDkSuhzasy49dwQS/DSdu4MdggFB8zcXv7vflBI3xp7FEmkmdDkBUI2bPUNeMttp2knYdxw==
 
+"@types/uuid@^8.3.4":
+  version "8.3.4"
+  resolved "https://registry.yarnpkg.com/@types/uuid/-/uuid-8.3.4.tgz#bd86a43617df0594787d38b735f55c805becf1bc"
+  integrity sha512-c/I8ZRb51j+pYGAu5CrFMRxqZ2ke4y2grEBO5AUjgSkSk+qT2Ea+OdWElz/OiMf5MNpn2b17kuVBwZLQJXzihw==
+
 "@types/yargs-parser@*":
   version "21.0.0"
   resolved "https://registry.yarnpkg.com/@types/yargs-parser/-/yargs-parser-21.0.0.tgz#0c60e537fa790f5f9472ed2776c2b71ec117351b"