diff --git a/packages/backend-defaults/src/entrypoints/cache/CacheManager.test.ts b/packages/backend-defaults/src/entrypoints/cache/CacheManager.test.ts
index c075bccaa1..d15671d5d2 100644
--- a/packages/backend-defaults/src/entrypoints/cache/CacheManager.test.ts
+++ b/packages/backend-defaults/src/entrypoints/cache/CacheManager.test.ts
@@ -25,15 +25,21 @@ import { CacheManager } from './CacheManager';
 // Contrived code because it's hard to spy on a default export
 jest.mock('@keyv/redis', () => {
   const Actual = jest.requireActual('@keyv/redis');
-  return jest.fn((...args: any[]) => {
-    return new Actual(...args);
-  });
+  const DefaultConstructor = Actual.default;
+  return {
+    ...Actual,
+    __esModule: true,
+    default: jest.fn((...args: any[]) => new DefaultConstructor(...args)),
+  };
 });
 jest.mock('@keyv/memcache', () => {
   const Actual = jest.requireActual('@keyv/memcache');
-  return jest.fn((...args: any[]) => {
-    return new Actual(...args);
-  });
+  const DefaultConstructor = Actual.default;
+  return {
+    ...Actual,
+    __esModule: true,
+    default: jest.fn((...args: any[]) => new DefaultConstructor(...args)),
+  };
 });
 
 describe('CacheManager integration', () => {
@@ -42,7 +48,7 @@ describe('CacheManager integration', () => {
   afterEach(jest.clearAllMocks);
 
   it.each(caches.eachSupportedId())(
-    'only creates one underlying connection, %p',
+    'only creates one underlying connection per plugin, %p',
     async cacheId => {
       const { store, connection } = await caches.init(cacheId);
 
@@ -59,10 +65,10 @@ describe('CacheManager integration', () => {
 
       if (store === 'redis') {
         // eslint-disable-next-line jest/no-conditional-expect
-        expect(KeyvRedis).toHaveBeenCalledTimes(1);
+        expect(KeyvRedis).toHaveBeenCalledTimes(3);
       } else if (store === 'memcache') {
         // eslint-disable-next-line jest/no-conditional-expect
-        expect(KeyvMemcache).toHaveBeenCalledTimes(1);
+        expect(KeyvMemcache).toHaveBeenCalledTimes(3);
       }
     },
   );
diff --git a/packages/backend-defaults/src/entrypoints/cache/CacheManager.ts b/packages/backend-defaults/src/entrypoints/cache/CacheManager.ts
index 4746035b10..57c326f00d 100644
--- a/packages/backend-defaults/src/entrypoints/cache/CacheManager.ts
+++ b/packages/backend-defaults/src/entrypoints/cache/CacheManager.ts
@@ -140,14 +140,15 @@ export class CacheManager {
 
   private createRedisStoreFactory(): StoreFactory {
     const KeyvRedis = require('@keyv/redis').default;
-    let store: typeof KeyvRedis | undefined;
+    const stores: Record<string, typeof KeyvRedis> = {};
+
     return (pluginId, defaultTtl) => {
-      if (!store) {
-        store = new KeyvRedis(this.connection, {
+      if (!stores[pluginId]) {
+        stores[pluginId] = new KeyvRedis(this.connection, {
           keyPrefixSeparator: ':',
         });
         // Always provide an error handler to avoid stopping the process
-        store.on('error', (err: Error) => {
+        stores[pluginId].on('error', (err: Error) => {
           this.logger?.error('Failed to create redis cache client', err);
           this.errorHandler?.(err);
         });
@@ -155,7 +156,7 @@ export class CacheManager {
       return new Keyv({
         namespace: pluginId,
         ttl: defaultTtl,
-        store,
+        store: stores[pluginId],
         emitErrors: false,
         useKeyPrefix: false,
       });
@@ -163,13 +164,14 @@ export class CacheManager {
   }
 
   private createMemcacheStoreFactory(): StoreFactory {
-    const KeyvMemcache = require('@keyv/memcache');
-    let store: typeof KeyvMemcache | undefined;
+    const KeyvMemcache = require('@keyv/memcache').default;
+    const stores: Record<string, typeof KeyvMemcache> = {};
+
     return (pluginId, defaultTtl) => {
-      if (!store) {
-        store = new KeyvMemcache(this.connection);
+      if (!stores[pluginId]) {
+        stores[pluginId] = new KeyvMemcache(this.connection);
         // Always provide an error handler to avoid stopping the process
-        store.on('error', (err: Error) => {
+        stores[pluginId].on('error', (err: Error) => {
           this.logger?.error('Failed to create memcache cache client', err);
           this.errorHandler?.(err);
         });
@@ -178,7 +180,7 @@ export class CacheManager {
         namespace: pluginId,
         ttl: defaultTtl,
         emitErrors: false,
-        store,
+        store: stores[pluginId],
       });
     };
   }