Zero 1.3

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Faster Initial Sync and Other Perf Improvements # Zero 1.3 ## Installation ```bash npm install @rocicorp/zero@1.3 ``` ## Features * [**Distributed Tracing:**](https://zero.rocicorp.dev/docs/debug/otel#distributed-tracing) Clients can now pass OpenTelemetry trace context to zero-cache via a `getTraceparent` callback, enabling end-to-end trace correlation from your frontend through zero-cache to your API server. * [**Sync Metrics:**](https://zero.rocicorp.dev/docs/debug/otel#zerosync) Added five new OTel metrics for sync worker visibility: `zero.sync.active-client-groups`, `zero.sync.queries`, `zero.sync.rows`, `zero.sync.lock-wait-time`, and `zero.sync.pipeline-resets`. ## Performance * [2x faster initial sync by switching to binary COPY protocol](https://github.com/rocicorp/mono/pull/5704) * [20-30% faster updates by optimizing `compareValues`](https://github.com/rocicorp/mono/pull/5754) and [`makeBoundComparator`](https://github.com/rocicorp/mono/pull/5791) ## Fixes * [Auth token and cookie not sent for cleanup pushes](https://github.com/rocicorp/mono/pull/5795) * [Hang during initial sync when no upstream changes occurred after backfill](https://github.com/rocicorp/mono/pull/5796) * [Publication validation not detecting `UPDATE` privilege changes](https://github.com/rocicorp/mono/pull/5788) * [Spurious error logs from background Postgres connection warmup](https://github.com/rocicorp/mono/pull/5756) ## Breaking Changes None.

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Faster Initial Sync and Other Perf Improvements

Installation

Copynpm install @rocicorp/zero@1.3

Features

• Distributed Tracing: Clients can now pass OpenTelemetry trace context to zero-cache via a getTraceparent callback, enabling end-to-end trace correlation from your frontend through zero-cache to your API server.
• Sync Metrics: Added five new OTel metrics for sync worker visibility: zero.sync.active-client-groups, zero.sync.queries, zero.sync.rows, zero.sync.lock-wait-time, and zero.sync.pipeline-resets.

Performance

• 2x faster initial sync by switching to binary COPY protocol
• 20-30% faster updates by optimizing compareValues and makeBoundComparator

Fixes

• Auth token and cookie not sent for cleanup pushes
• Hang during initial sync when no upstream changes occurred after backfill
• Publication validation not detecting UPDATE privilege changes
• Spurious error logs from background Postgres connection warmup

Breaking Changes

None.