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Node.js agent release notesRSS

July 10, 2015
Node.js agent v1.21.0


  • This release has been unpublished from npmjs.org. Use v1.21.1 or higher instead.

  • Support for display host names.

    The agent now has configuration settings to allow configuration of custom host names. Set process_host.display_name to enable this.

    If this config is not set, the agent will continue to use the host name found through an os.hostname() call. Should this lookup fail somehow, process_host.ipv_preference can now be set to 4 or 6 to configure the type of ip address displayed in place of the host name.

June 23, 2015
Node.js agent v1.20.2


June 11, 2015
Node.js agent v1.20.1


  • Fixed a bug in custom event recording limits.

    Previously, the agent would use the config value for max events (default of 1000) for the first harvest of custom events, then would use an internal default for the reservoir with max of 10 events for each harvest after that, resulting in less than the expected number of events being sent.

  • Exposed the custom_insights_events settings in the user config.

    You can now set custom_insights_events.enabled and custom_insights_events.max_samples_stored in your newrelic.js.

    Read more about these settings in our documentation.

June 5, 2015
Node.js agent v1.20.0


  • Triaged a defect in native promise instrumentation

    Transactions used to be lost acrossed chained .then calls. The way promises are wrapped has been changed to fix this issue.

  • Added support for Slow Queries

    Slow Query information will now appear in the UI for Node agent users. This feature allows you to see a trace for slow datastore queries. Read more about this feature in our documentation

May 21, 2015
Node.js agent v1.19.2


  • Fixed an issue with Error tracing

    Previously the agent could sometimes cause issues with user serialization of error Âobjects after they passed through the error tracing code.

  • MongoDB cursor count method is now instrumented

    The count method on MongoDB cursors is now instrumented. Previously, count would not be included in transaction traces.

  • Fixed a typo in NEWS.md

    Previously the release notes for v1.19.1 were included as notes for 1.19.0. This has now fixed thanks to @bruun

May 14, 2015
Node.js agent v1.19.1


  • Fixed a bug in native ES6 Promise instrumentation.

    Previously the Promise instrumentation would cause instanceof Promise to return false even if the object was a promise. This also caused an incompatibility with async-listener. instanceof checks will now work on both the wrapped and unwrapped Promise object.

May 6, 2015
Node.js agent v1.19.0


  • Filesystem interactions are now recorded in metrics

    The time spent in filesystem functions during a transaction will now be displayed in the transaction overview page per operation.


  • Fixed a bug with error handling.

    Previously the agent could crash applications in certain situations where null was thrown rather than an Error object.

May 1, 2015
Node.js agent v1.18.5

Bug fixes

  • Fixed a bug in environment variable based configuration.

    Previously the agent would parse the NEW_RELIC_APDEX environment variable as a string rather than a float this could cause data to be sent to New Relic servers in an invalid format, preventing the data from being collected.

  • Fixed a bug with the error collector's handling of ignored status codes.

    Previously the agent would not properly ignore status codes if the status code was set using a string rather than a number.

  • Fixed a bug in mysql instrumentation.

    Previously the mysql instrumentation could cause errors when making mysql queries using an options object rather than a SQL string. The agent now handles arguments to the query method in a more robust way.

April 22, 2015
Node.js agent v1.18.4


  • Fixed an inverted if in config loading.

    Previously, the config loader would log a warning on success, rather than failure. Configuration loading works as expected now.

  • Fixed a bug in process.nextTick instrumentation for io.js 1.8.1.

    Previously the agent would only pass the callback argument to process.nextTick. This did not cause issues in Node.js and older version of io.js, since additional arguments were ignored. In a recent change to io.js, process.nextTick was changed to pass any additional arguments to the callback, the same way setImmediate does. This change ensures all arguments are handled as expected.

April 16, 2015
Node.js agent v1.18.3


  • Wrapped all our calls to JSON.parse in try/catch.

    Previously, only calls that were considered unsafe due to external data input were wrapped. We are taking a more defensive stance and wrapping them all now.

  • Timers attached to global are now instrumented correctly in all version of io.js.

    As of v1.6.3 of io.js, timers are no longer lazily loaded from the timers module, and are placed directly on the global object. The agent now takes this change into account and accurately wraps the timer methods.

  • Improved handling of cross-application tracing headers.

    Paths that include multibyte characters will now show up correctly in cross application maps

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