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Zilla Plus 1.x

Zilla Plus 1.x

Zilla Plus is Aklivity's enterprise product for deploying and operating production API and event streaming gateways. This page summarizes the notable additions, changes, and fixes in each 1.x release. It is not an exhaustive log of every merged pull request.

1.5.0

Release Date: July 25, 2026

Added

  • Multi-architecture support for the AWS Marketplace Docker image, now published for linux/arm64 in addition to linux/amd64.

1.4.3

Release Date: July 25, 2026

Added

  • Startup now logs Detected vCPUs: N on both ECS and EKS.

1.4.2

Release Date: July 24, 2026

Fixed

  • Modules using the default AWS credential chain now correctly declare a dependency on aws-sts, needed for IRSA.

1.4.1

Release Date: July 21, 2026

Added

  • Kafka Proxy: SASL/OAUTHBEARER support for internal.authorization, in addition to the existing external.authorization support.

Fixed

  • Kafka Proxy: Fetch responses now resolve the topic model by the external (aliased) topic name instead of the internal one.

1.4.0

Release Date: July 20, 2026

Added

  • New aws-cognito guard, validating AWS Cognito JWTs via OIDC discovery.
  • Kafka Proxy: SASL/OAUTHBEARER termination for external client connections, usable with any guard, including the new aws-cognito guard.
  • Kafka Proxy: per-client topic aliasing (topics[].alias), rewriting the internal topic name from a guard's established identity or attributes, with coverage across all supported Kafka APIs.
  • zilla logs command, for checking engine telemetry log events.

Fixed

  • Kafka client no longer rejects a cache fetch when the partition leader isn't known yet.
  • Several Kafka Proxy protocol-framing fixes, including cached response-length adjustment, varint padding for KIP-482 tagged fields, per-binding API version narrowing at decode time, and Fetch v12 framing when all records are rejected.

1.3.8

Release Date: July 9, 2026

Fixed

  • Immediate retry on Kafka client metadata refresh failure.
  • Kafka client binding now exports telemetry events.

1.3.6

Release Date: May 15, 2026

Added

  • guard-oauth: OAuth guard supporting token-exchange, client-credentials, and JWT-bearer grants.
  • Radix option added to kafka-proxy address configuration.
  • Stream-driven destination routing for the http binding, deriving the proxy target from the :authority header.
  • New sys: system namespace with built-in egress bindings (sys:http_client, sys:tls_client, sys:tcp_client).

Fixed

  • kafka.response.bytes attribute resolution when both type and error_code are configured.

1.3.2

Release Date: April 21, 2026

Added

  • kafka-proxy-specific metrics delivered with arbitrary attributes.
  • Configuration syntax for metrics with arbitrary attributes, with enhanced metric resolution for raw protocol bindings.

1.2.1

Release Date: April 9, 2026

Added

  • aws-secrets vault: auto-probe for newly created secrets.

Fixed

  • PlatformResolver updated to pick up the current token file name.

1.2.0

Release Date: April 7, 2026

Changed

  • Upgraded to JDK 25 and Agrona 2.4.0.

Fixed

  • OTLP exporter no longer crashes when an event message contains double quotes.

1.1.5

Release Date: April 4, 2026

Added

  • aws-secrets vault: support for an environment tag filter during secret discovery.
  • Support for zilla start ... --diagnostics-directory to capture engine state.

Fixed

  • Gateway ID is now persistent across restarts.
  • Kafka cache segment cleanup and event log cleanup.

1.1.4

Release Date: March 27, 2026

Added

  • Logging for authentication errors in the Kafka client binding.

1.1.1

Release Date: March 26, 2026

Added

  • Support for a platform config URL expression.

1.1.0

Release Date: March 24, 2026

Added

  • Helm chart for deploying Zilla Plus to Amazon EKS.
  • Kafka cluster policies, including the remaining Kafka constraints.
  • Support for BOOTSTRAP_TOKEN_FILE and BOOTSTRAP_TOKEN_FILE_ENV_VAR.

Fixed

  • External authentication no longer unintentionally triggers internal authentication; missing client proxy beginEx fixed.
  • Connection leak in the HTTP/1.1 client.

1.0.6

Release Date: March 17, 2026

Fixed

  • Kafka produce idle timeout issue.
  • HTTP/1.1 keep-alive stall after a 400 error response reset.

1.0.5

Release Date: March 15, 2026

Added

  • Enhanced the dump command to support explicit initial offsets and advance beyond padding to reach the last record.

Fixed

  • HTTP/1.1 response reset handling when a request is reset.

1.0.4

Release Date: March 11, 2026

Added

  • Schema Registry proxy support.
  • Gateway syntax for Kafka topic policies.

Fixed

  • HTTP/1.1 request flow control sequence issue.
  • NullPointerException in KafkaClientDescribeFactory when a broker returns partial configs.

1.0.3

Release Date: March 10, 2026

Fixed

  • HTTP/1.1 server binding flow control issue affecting GET echo.

1.0.2

Release Date: March 6, 2026

Fixed

  • Null binding issue during connection accept.

1.0.1

Release Date: March 6, 2026

Fixed

  • IllegalStateException the engine could trigger during shutdown.
  • Potential NullPointerException for a rejected HTTP/1.1 request with content.
  • The engine no longer accepts new TCP connections while shutting down.