diff --git a/packages/nestjs-cache/src/__fixtures__/entities/user-cache-entity.fixture.ts b/packages/nestjs-cache/src/__fixtures__/entities/user-cache-entity.fixture.ts
index d1c0ccee4..04378ec39 100644
--- a/packages/nestjs-cache/src/__fixtures__/entities/user-cache-entity.fixture.ts
+++ b/packages/nestjs-cache/src/__fixtures__/entities/user-cache-entity.fixture.ts
@@ -1,4 +1,4 @@
-import { Entity, ManyToOne } from 'typeorm';
+import { Entity, ManyToOne, Unique } from 'typeorm';
 import { ReferenceIdInterface } from '@concepta/ts-core';
 import { UserEntityFixture } from './user-entity.fixture';
 import { CacheSqliteEntity } from '../../entities/cache-sqlite.entity';
@@ -7,7 +7,10 @@ import { CacheSqliteEntity } from '../../entities/cache-sqlite.entity';
  * Cache Entity Fixture
  */
 @Entity()
+@Unique(['key', 'type', 'assignee.id'])
 export class UserCacheEntityFixture extends CacheSqliteEntity {
-  @ManyToOne(() => UserEntityFixture, (user) => user.userCaches)
+  @ManyToOne(() => UserEntityFixture, (user) => user.userCaches, {
+    nullable: false,
+  })
   assignee!: ReferenceIdInterface;
 }
diff --git a/packages/nestjs-cache/src/cache.seeder.ts b/packages/nestjs-cache/src/cache.seeder.ts
index cf93f14f3..59b35a9e3 100644
--- a/packages/nestjs-cache/src/cache.seeder.ts
+++ b/packages/nestjs-cache/src/cache.seeder.ts
@@ -1,5 +1,6 @@
 import { Seeder } from '@concepta/typeorm-seeding';
 import { CacheFactory } from './cache.factory';
+import { UserFactoryFixture } from './__fixtures__/factories/user.factory.fixture';
 
 /**
  * Cache seeder
@@ -16,8 +17,14 @@ export class CacheSeeder extends Seeder {
 
     // the factory
     const cacheFactory = this.factory(CacheFactory);
+    const userFactory = this.factory(UserFactoryFixture);
+    const user = await userFactory.create();
 
     // create a bunch
-    await cacheFactory.createMany(createAmount);
+    await cacheFactory.createMany(createAmount, {
+      assignee: {
+        id: user.id,
+      },
+    });
   }
 }
diff --git a/packages/nestjs-cache/src/controllers/cache-crud.controller.e2e-spec.ts b/packages/nestjs-cache/src/controllers/cache-crud.controller.e2e-spec.ts
index 517539f8d..9f7883697 100644
--- a/packages/nestjs-cache/src/controllers/cache-crud.controller.e2e-spec.ts
+++ b/packages/nestjs-cache/src/controllers/cache-crud.controller.e2e-spec.ts
@@ -130,6 +130,36 @@ describe('CacheAssignmentController (e2e)', () => {
       });
   });
 
+  it('POST /cache/user assignee id null', async () => {
+    const payload = {
+      key: 'dashboard-1',
+      type: 'filter',
+      data: '{}',
+      expiresIn: '1d',
+      assignee: { id: null },
+    };
+
+    await supertest(app.getHttpServer())
+      .post('/cache/user')
+      .send(payload)
+      .expect(500);
+  });
+
+  it('POST /cache/user wrong assignee id', async () => {
+    const payload = {
+      key: 'dashboard-1',
+      type: 'filter',
+      data: '{}',
+      expiresIn: '1d',
+      assignee: { id: 'test' },
+    };
+
+    await supertest(app.getHttpServer())
+      .post('/cache/user')
+      .send(payload)
+      .expect(500);
+  });
+
   it('POST /cache/user Duplicated', async () => {
     const payload: CacheCreatableInterface = {
       key: 'dashboard-1',
@@ -148,15 +178,45 @@ describe('CacheAssignmentController (e2e)', () => {
         expect(res.body.assignee.id).toBe(user.id);
       });
 
+    payload.data = '{ "name": "John Doe" }';
+    payload.expiresIn = null;
     await supertest(app.getHttpServer())
       .post('/cache/user')
       .send(payload)
+      .expect(201)
       .then((res) => {
-        // check error message
-        expect(res.body.message).toBe(
-          'userCache already exists with the given key, type, and assignee ID.',
-        );
-        expect(res.status).toBe(400);
+        expect(res.body.key).toBe(payload.key);
+        expect(res.body.data).toBe(payload.data);
+        expect(res.body.assignee.id).toBe(user.id);
+      });
+  });
+
+  it('POST /cache/user Update', async () => {
+    const payload: CacheCreatableInterface = {
+      key: 'dashboard-1',
+      type: 'filter',
+      data: '{}',
+      expiresIn: '1d',
+      assignee: { id: user.id },
+    };
+    await supertest(app.getHttpServer())
+      .post('/cache/user')
+      .send(payload)
+      .expect(201)
+      .then((res) => {
+        expect(res.body.key).toBe(payload.key);
+        expect(res.body.assignee.id).toBe(user.id);
+      });
+    payload.data = '{ "name": "John Doe" }';
+    payload.expiresIn = null;
+    await supertest(app.getHttpServer())
+      .post('/cache/user/')
+      .send(payload)
+      .expect(201)
+      .then((res) => {
+        expect(res.body.key).toBe(payload.key);
+        expect(res.body.data).toBe(payload.data);
+        expect(res.body.assignee.id).toBe(user.id);
       });
   });
 
diff --git a/packages/nestjs-cache/src/controllers/cache-crud.controller.ts b/packages/nestjs-cache/src/controllers/cache-crud.controller.ts
index 335832c78..d17d027a3 100644
--- a/packages/nestjs-cache/src/controllers/cache-crud.controller.ts
+++ b/packages/nestjs-cache/src/controllers/cache-crud.controller.ts
@@ -38,7 +38,7 @@ import { CacheSettingsInterface } from '../interfaces/cache-settings.interface';
 import { CacheCrudService } from '../services/cache-crud.service';
 import getExpirationDate from '../utils/get-expiration-date.util';
 import { CacheService } from '../services/cache.service';
-import { CacheEntityAlreadyExistsException } from '../exceptions/cache-entity-already-exists.exception';
+import { CacheCreateDto } from '../dto/cache-create.dto';
 /**
  * Cache assignment controller.
  */
@@ -121,7 +121,7 @@ export class CacheCrudController
   @AccessControlCreateOne(CacheResource.One)
   async createOne(
     @CrudRequest() crudRequest: CrudRequestInterface,
-    @CrudBody() cacheCreateDto: CacheCreatableInterface,
+    @CrudBody() cacheCreateDto: CacheCreateDto,
     @Param('assignment') assignment: ReferenceAssignment,
   ) {
     const expirationDate = getExpirationDate(
@@ -133,17 +133,30 @@ export class CacheCrudController
       cacheCreateDto,
     );
 
+    // update or create
     if (existingCache) {
-      throw new CacheEntityAlreadyExistsException(
-        this.getEntityKey(assignment),
+      crudRequest.parsed.search.$and?.push({
+        id: {
+          $eq: existingCache.id,
+        },
+      });
+      // call crud service to create
+      const response = await this.getCrudService(assignment).updateOne(
+        crudRequest,
+        {
+          id: existingCache.id,
+          ...cacheCreateDto,
+          expirationDate,
+        },
       );
+      return response;
+    } else {
+      // call crud service to create
+      return this.getCrudService(assignment).createOne(crudRequest, {
+        ...cacheCreateDto,
+        expirationDate,
+      });
     }
-
-    // call crud service to create
-    return this.getCrudService(assignment).createOne(crudRequest, {
-      ...cacheCreateDto,
-      expirationDate,
-    });
   }
 
   /**
diff --git a/packages/nestjs-cache/src/entities/cache-postgres.entity.ts b/packages/nestjs-cache/src/entities/cache-postgres.entity.ts
index 1867d89ef..9b0924446 100644
--- a/packages/nestjs-cache/src/entities/cache-postgres.entity.ts
+++ b/packages/nestjs-cache/src/entities/cache-postgres.entity.ts
@@ -1,4 +1,4 @@
-import { Column, Index } from 'typeorm';
+import { Column, Unique } from 'typeorm';
 import { ReferenceIdInterface } from '@concepta/ts-core';
 import { CacheInterface } from '@concepta/ts-common';
 import { CommonPostgresEntity } from '@concepta/typeorm-common';
@@ -6,7 +6,7 @@ import { CommonPostgresEntity } from '@concepta/typeorm-common';
 /**
  * Cache Postgres Entity
  */
-@Index('key_unique_index', ['key', 'type', 'assignee.id'], { unique: true })
+@Unique(['key', 'type', 'assignee.id'])
 export abstract class CachePostgresEntity
   extends CommonPostgresEntity
   implements CacheInterface
diff --git a/packages/nestjs-cache/src/entities/cache-sqlite.entity.ts b/packages/nestjs-cache/src/entities/cache-sqlite.entity.ts
index 1854c5527..7a8611d25 100644
--- a/packages/nestjs-cache/src/entities/cache-sqlite.entity.ts
+++ b/packages/nestjs-cache/src/entities/cache-sqlite.entity.ts
@@ -1,4 +1,4 @@
-import { Column, Index } from 'typeorm';
+import { Column, Unique } from 'typeorm';
 import { CommonSqliteEntity } from '@concepta/typeorm-common';
 import { ReferenceIdInterface } from '@concepta/ts-core';
 import { CacheInterface } from '@concepta/ts-common';
@@ -7,7 +7,7 @@ import { CacheInterface } from '@concepta/ts-common';
  * Cache Sqlite Entity
  */
 
-@Index('key_unique_index', ['key', 'type', 'assignee.id'], { unique: true })
+@Unique(['key', 'type', 'assignee.id'])
 export abstract class CacheSqliteEntity
   extends CommonSqliteEntity
   implements CacheInterface
diff --git a/packages/nestjs-cache/src/services/cache.service.ts b/packages/nestjs-cache/src/services/cache.service.ts
index 658977e69..a6d5d810f 100644
--- a/packages/nestjs-cache/src/services/cache.service.ts
+++ b/packages/nestjs-cache/src/services/cache.service.ts
@@ -2,11 +2,7 @@ import { plainToInstance } from 'class-transformer';
 import { validate } from 'class-validator';
 import { DeepPartial, Repository } from 'typeorm';
 import { Inject, Injectable } from '@nestjs/common';
-import {
-  CacheCreatableInterface,
-  CacheInterface,
-  CacheUpdatableInterface,
-} from '@concepta/ts-common';
+import { CacheInterface, CacheUpdatableInterface } from '@concepta/ts-common';
 import { ReferenceAssignment, ReferenceId, Type } from '@concepta/ts-core';
 import {
   QueryOptionsInterface,
@@ -44,7 +40,7 @@ export class CacheService implements CacheServiceInterface {
    */
   async create(
     assignment: ReferenceAssignment,
-    cache: CacheCreatableInterface,
+    cache: CacheCreateDto,
     queryOptions?: QueryOptionsInterface,
   ): Promise<CacheInterface> {
     // get the assignment repo