Runtime versions using Java
The following sections contain information about the CloudWatch Synthetics runtime versions for Java. These runtimes do not include a browser or framework.
The naming convention for these runtime versions is syn-. language
-majorversion.minorversion
syn-java-2.0
Major dependencies:
-
Amazon Lambda runtime Java 21
Changes in syn-java-2.0
-
Update the telemetry instrumentation and other bundled components to address security vulnerabilities.
-
Fix an issue that could cause HTTP status code metrics to report zero even when the canary made requests.
-
Fix an issue that could create a duplicate X-Ray trace for a canary run.
-
Improve cleanup after canary timeouts to reduce the risk of storage issues in subsequent runs.
-
Prevent file-processing tasks from a previous canary run from affecting a subsequent run.
The following earlier runtime versions for Java are still supported.
syn-java-1.0
Major dependencies:
-
Amazon Lambda runtime Java 21
Features
-
CloudWatch Logs integration - You can query and filter for logs through the CloudWatch Synthetics console. Each log message contains unique
canaryRunId, making it easy to search for logs for a particular canary run. -
Metrics - You can monitor canary run success percentage and duration through CloudWatch metrics. You can also configure alarms to alert you when canaries detect issues.
-
Canary artifacts - Each canary run uploads a detailed report corresponding to the run and the steps in the run which can be accessed through Amazon S3.
-
Support for traces - You can emit traces for all the requests made by the canary through X-Ray. Each canary run is associated with one trace Id.