Two unrelated small cache improvements

.changeset/fifty-eyes-chew.md

@@ -0,0 +1,5 @@
+---
+'@apollo/server-plugin-response-cache': minor
+---
+
+If the cache you provide to the `cache` option is created with `PrefixingKeyValueCache.cacheDangerouslyDoesNotNeedPrefixesForIsolation` (new in `@apollo/utils.keyvaluecache@2.1.0`), the `fqc:` prefix will not be added to cache keys.

.changeset/selfish-buckets-mate.md

@@ -0,0 +1,5 @@
+---
+'@apollo/server': minor
+---
+
+If the cache you provide to the `persistedQueries.cache` option is created with `PrefixingKeyValueCache.cacheDangerouslyDoesNotNeedPrefixesForIsolation` (new in `@apollo/utils.keyvaluecache@2.1.0`), the `apq:` prefix will not be added to cache keys. Providing such a cache to `new ApolloServer()` throws an error.

.changeset/sour-kiwis-eat.md

@@ -0,0 +1,5 @@
+---
+'@apollo/server': patch
+---
+
+For ease of upgrade from the recommended configuration of Apollo Server v3.9+, you can now pass `new ApolloServer({ cache: 'bounded' })`, which is equivalent to not providing the `cache` option (as a bounded cache is now the default in AS4).

docs/source/api/apollo-server.mdx

@@ -353,7 +353,7 @@ Controls whether to allow [Batching Queries](../workflow/requests/#batching) in
 
 A [`KeyValueCache`](https://www.npmjs.com/package/@apollo/utils.keyvaluecache) which Apollo Server uses for several features, including APQs and full response caching. This cache is also available to Apollo Server's plugins.
 
-The default cache is an [`InMemoryLRUCache`](https://www.npmjs.com/package/@apollo/utils.keyvaluecache) with a default size of roughly 30MiB.
+The default cache is an [`InMemoryLRUCache`](https://www.npmjs.com/package/@apollo/utils.keyvaluecache) with a default size of roughly 30MiB. (For backwards-compatibility with Apollo Server 3, specifying `cache: 'bounded'` also selects this default bounded cache.)
 
 To learn more about configuring Apollo Server's cache, see [Configuring cache backends](../performance/cache-backends).
 

packages/gateway-interface/package.json

@@ -20,7 +20,7 @@
   "dependencies": {
     "@apollo/utils.fetcher": "^2.0.0",
     "@apollo/utils.logger": "^2.0.0",
-    "@apollo/utils.keyvaluecache": "^2.0.1",
+    "@apollo/utils.keyvaluecache": "^2.1.0",
     "@apollo/usage-reporting-protobuf": "^4.0.0"
   },
   "peerDependencies": {

packages/integration-testsuite/package.json

@@ -30,7 +30,7 @@
     "@apollo/client": "^3.6.9",
     "@apollo/server": "4.2.2",
     "@apollo/server-plugin-landing-page-graphql-playground": "^4.0.0",
-    "@apollo/utils.keyvaluecache": "^2.0.1",
+    "@apollo/utils.keyvaluecache": "^2.1.0",
     "@apollo/utils.createhash": "^2.0.0",
     "@apollo/usage-reporting-protobuf": "^4.0.0",
     "@josephg/resolvable": "^1.0.1",

packages/plugin-response-cache/package.json

@@ -30,7 +30,7 @@
   },
   "dependencies": {
     "@apollo/utils.createhash": "^2.0.0",
-    "@apollo/utils.keyvaluecache": "^2.0.1"
+    "@apollo/utils.keyvaluecache": "^2.1.0"
   },
   "peerDependencies": {
     "@apollo/server": "^4.0.1",