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RELEASE_NOTES.md

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Releases

0.0.22 / 2025.01.08

  • All deployments now use an extra layer of isolation, based on Google's gVisor, for additional security.
  • Telemetry from deployments that use the @opentelemetry/api NPM package is now automatically exported via the OpenTelemetry pipeline.
  • A new communication protocol between proxies and workers was implemented to improve stability when handling large HTTP requests or sending large HTTP responses.
  • The Helm chart now allows for multiple deno-cluster installations in different namespaces within the same cluster.
  • Different controller replicas are now spread out across multiple nodes for improved fault tolerance, by means of a pod anti-affinity rule.

0.0.21 / 2024.12.16

  • Fixed a regression introduced in v0.0.20 where the controller would sometimes mark workers that had successfully booted as failed.

0.0.20 / 2024.12.16

  • Resolved an issue where the controller would wait indefinitely for a worker that failed to start. The controller now marks a worker as failed if it does not start within 60 seconds.
  • Failures during startup and uncaught exceptions are now logged through the OpenTelemetry pipeline as boot_failure and uncaught_exception events, respectively.

0.0.19 / 2024.12.11

  • Resolved an issue where additional workers for a deployment would fail to start when the controller had been restarted or failed over between the creation of the initial worker and the subsequent scale-up event.
  • Fixed typos in the Terraform script for Azure.
  • Added native support for ARM64 architecture, expanding container image compatibility beyond x86_64 to include linux/arm64 platforms.

0.0.18 / 2024.12.04

  • Resolved an issue where all open connections between the proxy and worker were not severed immediately when a worker became unreachable, causing HTTP requests to hang.
  • Resolved an issue where isolate logs exported through the OpenTelemetry pipeline were not always completely flushed (e.g. when an isolate crashes).
  • Multiple isolates of the same deployment invoked with different x-deno-isolate-instance-id now correctly share web caches.
  • It is no longer a requirement that all entries in a deployment tarball are prefixed with ./.
  • The ddng deploy command now triggers a hostmap cache flush in the proxy, reducing the delay for a new deployment to an existing domain to become visible.
  • Added support for configuring the OpenTelemetry service name and resource attributes for individual deployments. When using the ddng script to make deployments, these can be specified using the --otel-service-name and --otel-resource-attribute flags.
  • Metrics exported by the proxy and controller now use the prefix deno_cluster_ for easy identification.

0.0.17 / 2024.11.20

  • The terraform modules now output the Helm configuration to stdout, in addition to generating a ready-to-use values.yaml file.
  • The controller now exposes various metrics, such as the number of active isolate workers, through the OpenTelemetry pipeline.
  • Improved error transparency when an HTTP request fails to be processed by an isolate. The underlying cause is now provided via the x-deno-error response header.
  • The container registry was switched to Github Container Registry (ghcr.io).