# Changelog 2023 03 13

### Fixes & improvements

- Autoscaling: Added support for scaling Neon's local file cache size when scaling a virtual machine.

- Compute: Released a new `pg_tiktoken` Postgres extension, created by the Neon engineering team. The extension is a wrapper for [OpenAI's tokenizer](https://github.com/openai/tiktoken). It provides fast and efficient tokenization of data stored in a Postgres database.
  The extension supports two functions:

  - The `tiktoken_encode` function takes text input and returns tokenized output, making it easier to analyze and process text data.
  - The `tiktoken_count` function returns the number of tokens in a text, which is useful for checking text length limits, such as those imposed by OpenAI's language models.

  The `pg_tiktoken` code is available on [GitHub](https://github.com/kelvich/pg_tiktoken).

- Compute: Added support for the Postgres `prefix`, `hll` and `plpgsql_check` extensions. For more information about Postgres extensions supported by Neon, see [Postgres extensions](/guides/postgres-extensions-pg-extensions).

- Compute, Pageserver, Safekeeper: Added support for RS384 and RS512 JWT tokens, used to securely transmit information as JSON objects.

- Pageserver: Removed the block cursor cache, which provided little performance benefit and would hold page references that caused deadlocks.

## Related pages

- [Add users and authentication](./auth-index.md)
- [AI tools for Agents](./ai-agents-on-neon-index.md)
- [APIs & SDKs](./apis-sdks-index.md)
- [Changelog](../changelog.md)
- [Explore the full platform: functions, object storage, AI Gateway, and more](./neon-docs-index.md)
- [Integrating with Neon](./building-on-neon-index.md)
- [Lakebase Postgres](./postgres-index.md)
- [More](./more-index.md)
- [Neon AI Gateway](./ai-gateway-index.md)
- [Neon community](./community-index.md)

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