April 2026 (2026-04) monthly summary for getsentry/sentry-python: Implemented isolation scopes in the async gRPC interceptor to prevent scope bleed across concurrent requests, enhancing transaction isolation and reliability in high-concurrency environments. The change was delivered as a fix to the async server interceptor (commit 047a516ff3595f4a7b1a9e5f7dc72f33194d81b5). This reduces cross-request contamination and improves stability for clients using gRPC in Python.

February 2026: Fixed a correctness bug in the AsyncIO server concurrency limiter for grpc/grpc to prevent negative active RPC counts and preserve the maximum_concurrent_rpcs invariant under high load. The fix gates the decrement callback to only requests that were actually counted (i.e., when concurrency_exceeded was false), ensuring accurate accounting when requests are rejected but finish. This improves stability and reliability of the server under concurrent workloads and reduces risk of resource exhaustion due to miscounted active RPCs.