InMemoryCache

This patch release addresses issues with incremental queries and cache data leakage. It improves performance by optimizing error object construction and JSON stringification for cache diffs.

This release improves the accuracy of `dataState` in complex incremental streaming scenarios with `@defer` and `@stream` directives, ensuring `read` functions are applied to intermediate results and fixing truncation issues with `@stream` queries when `returnPartialData: true`.

Introduced a new GraphQL Codegen plugin to generate configurations for custom scalars, simplifying their integration with Apollo Client's InMemoryCache and type policies.

This release introduces comprehensive support for custom scalars within Apollo Client, allowing users to define parsing and serialization logic for non-standard scalar types in both cache operations and network requests.

This release introduces significant enhancements to cache interaction, including support for array watching via fragments, new options for context in `useMutation`, and expanded support for GraphQL incremental delivery specifications like `@defer` (v17 alpha 9) and `@stream`.

This release adds new cache behavior for undefined array items, introduces an \`extensions\` option to cache write methods, and improves fragment hooks with memoized observable mapping.

This release adds improved handling of masked fragments, introduces dataState in watchFragment, normalizes empty argument storage, and updates cache read behavior, while deprecating old readFragment/readQuery signatures and removing gql from the react entrypoint.

Apollo Client 4.0 introduces the new `preloadQuery.toPromise` API and removes the old `queryRef.toPromise`, while adding numerous deprecation warnings across React APIs, ApolloClient options, and cache settings. A bug fix prevents field policies from incorrectly merging into supertype policies.

This release removes two deprecated configuration options, adds a new `operationType` field for easier operation checks, exports several types, and includes bug fixes around resolver warnings and query rerendering.

This release moves unstable testing utilities to an internal namespace, removes several deprecated testing helpers, adds subtle `useQuery` and `ObservableQuery` behavior improvements, and deprecates old MockLink type exports.

This patch updates InMemoryCache to use JSON serialization for all stored values, aligning its behavior with RuntimeCache for improved consistency across different caching environments.

This patch updates InMemoryCache to use JSON serialization for all stored values, aligning its behavior with RuntimeCache for improved consistency across different caching environments.

This patch update refactors the internal in-memory cache to utilize a singleton instance.

This release introduces extensive model support, including Qwen, Deepseek 3.1, and Gemini 2.5 Flash, alongside significant stability improvements, concurrency fixes for sync streaming, and enhancements to logging and cost tracking features.

This release introduces extensive model support additions, including Qwen, Deepseek 3.1, and Gemini 2.5 Flash, alongside significant fixes for concurrency, caching, and guardrail implementations. Key features include scheduled key rotations and enhanced cost tracking visibility.

This release introduces the SqliteStore and InMemoryCache, moves FileCache to the sqlite package, and updates the CI pipeline to use uv.

Release 2.0.26 introduces a SQLite-backed FileCache, adds InMemoryCache, and implements TTL and namespacing features while removing Python version upper bounds.

LangGraph 0.4.4 introduces functional API state updates, new caching mechanisms (FileCache/InMemoryCache), and Deferred Nodes, alongside significant improvements to test fixtures and graph visualization.