Browse Definitions :
Definition

canary (canary test, canary deployment)

This definition is part of our Essential Guide: Simplify the production deployment process with these tips

In software testing, a canary is a push of programming code changes to a small group of end users who are unaware that they are receiving new code. Because the canary is only distributed to a small number of users, its impact is relatively small and changes can be reversed quickly should the new code prove to be buggy. Canary tests, which are often automated, are run after testing in a sandbox environment has been completed.

For incremental code changes, a canary approach to delivering functionality allows the development team to quickly evaluate whether or not the code release provides the desired outcome. The word canary was selected to describe the code push to a subset of users because canaries were once used in coal mining to alert miners when toxic gases reached dangerous levels. Like the canary in a coal mind, the end user who is selected to receive new code in a canary test is unaware he is being used to provide an early warning.

In canary testing, a small subset of traffic serves as a test for updates. If anything in the update causes problems, it alerts the IT team before a large group of users feel the effects. In canary testing, a small subset of end users serves as a test group for updates. If anything in the update causes problems, it alerts the IT team before a large group of users feel the effects.

This was last updated in November 2016

Continue Reading About canary (canary test, canary deployment)

Join the conversation

3 comments

Send me notifications when other members comment.

Please create a username to comment.

I think there might be a typo here.
Users "not volunteering" seems like a seriously dubious business practice.
Cancel
There's a bit of confusion here.
Users' reaction and experience might be tested with this "canary code" but those users do not perform any testing.

Testing includes investigation, isolation, and reporting of the problem. "It sucks" is not very actionable report but one can't hope to get any better with this so called "canary testing".
Cancel
Does Amazon Web Services allow canary release?
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • RSA algorithm (Rivest-Shamir-Adleman)

    The RSA algorithm is the basis of a cryptosystem -- a suite of cryptographic algorithms that are used for specific security ...

  • remote access

    Remote access is the ability to access a computer or a network remotely through a network connection.

  • IP Spoofing

    IP spoofing is the crafting of Internet Protocol (IP) packets with a source IP address that has been modified to impersonate ...

SearchHealthIT

SearchDisasterRecovery

  • network disaster recovery plan

    A network disaster recovery plan is a set of procedures designed to prepare an organization to respond to an interruption of ...

  • virtual disaster recovery

    Virtual disaster recovery is a type of DR that typically involves replication and allows a user to fail over to virtualized ...

  • tabletop exercise (TTX)

    A tabletop exercise (TTX) is a disaster preparedness activity that takes participants through the process of dealing with a ...

SearchStorage

  • disk array

    A disk array, also called a storage array, is a data storage system used for block-based storage, file-based storage or object ...

  • enterprise storage

    Enterprise storage is a centralized repository for business information that provides common data management, protection and data...

  • optical storage

    Optical storage is any storage type in which data is written and read with a laser. Typically, data is written to optical media, ...

Close