Cloud Pub/Sub API Changes — Google Cloud Radar Real-time pre-release intelligence and changelog for Google Cloud Pub/Sub. Tracked from Google Discovery Service. https://google-cloud-radar.com/services/cloud-pub-sub/atom.xml 2026-11-12T00:00:00Z Google Cloud Radar https://github.com/max-ostapenko/google-cloud-radar ⚠️ [BREAKING] Zstd Compression Option Rolled Back https://google-cloud-radar.com/changes/2026-11-12-pubsub-v1 2026-11-12T00:00:00Z 2026-11-12T00:00:00Z The recently added Zstd compression algorithm option for Pub/Sub messages has been removed. Developers using or planning to use Zstd compression should revert to other supported algorithms. Pub/Sub Adds Zstd Compression Support https://google-cloud-radar.com/changes/2026-11-11-pubsub-v1 2026-11-11T00:00:00Z 2026-11-11T00:00:00Z Cloud Pub/Sub now supports Zstd as a compression algorithm for messages. Developers can leverage Zstd for potentially better compression ratios and performance, offering more options for optimizing message throughput and storage. Pub/Sub Bigtable Sink: Custom Row Keys & Columns https://google-cloud-radar.com/changes/2026-09-30-pubsub-v1 2026-09-30T00:00:00Z 2026-09-30T00:00:00Z The Pub/Sub Bigtable integration now offers significantly enhanced control over data ingestion. Developers can define custom row keys and map message fields to specific Bigtable column families, moving beyond the default fixed schema. Client Telemetry for Pub/Sub Publish Operations https://google-cloud-radar.com/changes/2026-09-23-pubsub-v1beta2 2026-09-23T00:00:00Z 2026-09-23T00:00:00Z Cloud Pub/Sub introduces new schemas, `PublishOperation` and `PubsubClientTelemetry`, to provide more detailed client-side telemetry for publish operations, including hedging attempts and client-side start times. Pub/Sub Adds Client Telemetry for Publish Operations https://google-cloud-radar.com/changes/2026-09-23-pubsub-v1beta1a 2026-09-23T00:00:00Z 2026-09-23T00:00:00Z The Pub/Sub API now includes new schemas for client-side telemetry, `PubsubClientTelemetry` and `PublishOperation`. These additions provide insights into publish operations, such as hedging attempts and client-side publish start times, to aid in debugging and performance analysis. Pub/Sub Adds Client Telemetry for Publish Operations https://google-cloud-radar.com/changes/2026-09-23-pubsub-v1 2026-09-23T00:00:00Z 2026-09-23T00:00:00Z New `PubsubClientTelemetry` and `PublishOperation` schemas provide client-side debugging information for publish calls, including hedging attempts and start times.