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neon/libs/utils
Erik Grinaker 3915995530 pageserver/client_grpc: add rich Pageserver gRPC client (#12462)
## Problem

For the communicator, we need a rich Pageserver gRPC client.

Touches #11735.
Requires #12434.

## Summary of changes

This patch adds an initial rich Pageserver gRPC client. It supports:

* Sharded tenants across multiple Pageservers.
* Pooling of connections, clients, and streams for efficient resource
use.
* Concurrent use by many callers.
* Internal handling of GetPage bidirectional streams, with pipelining
and error handling.
* Automatic retries.
* Observability.

The client is still under development. In particular, it needs GetPage
batch splitting, shard map updates, and performance optimization. This
will be addressed in follow-up PRs.
2025-07-09 11:42:46 +00:00
..