How deeply does Contract Testing in Action cover release?

Distinguishes releases from deployments, demonstrates a broker command, and connects recording with environment-aware version selection.

Release

As explained in Contract Testing in Action

A release is a software version designated as available or officially delivered, independently of whether it is currently deployed.

When mobile users update at different times, several app versions may remain in use. A release records a version as available in an environment without removing earlier released versions. section 10.2.4

In Pact, release recording differs from deployment recording:

A released version leaves previous versions marked as released, supporting mobile applications whose users run different versions. section 10.2.4
A deployed version replaces the previous deployed status, fitting APIs and web applications where one code version is used. section 10.2.4
Recording the release after delivery lets Pact track which versions are available in an environment and supports deployed-or-released version selection. section 10.5

Recording a mobile release

After publishing MoviesAndroidApp to production, record its version with `pact-broker record-release --pacticipant MoviesAndroidApp --version $GITHUB_SHA --environment production`. Earlier released versions remain recorded, allowing Pact to represent the mobile application's version spread.

pact-broker record-release 
--pacticipant MoviesAndroidApp 
--version $GITHUB_SHA 
--environment production

Use the command listing to adapt release recording to a participant, version identifier, and target environment. section 10.2.4

How Contract Testing in Action covers it

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Also explained in

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Elixir in Action, Third EditionA release is a self-contained deployment artifact containing an application, its dependencies, compiled code, and the runtime needed to execute it.
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Think Like a CTOA software release is a version of software made available for deployment or use, containing a defined set of changes or fixes.
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Shipping Go: Develop, deliver, discuss, design, and go againA release is a prepared software version made available for use by its intended recipients.

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Related concepts

deploymentcontrasts with · Deployment is the process of making software, models, or other computational systems available to operate in a target environment.
value streampart of · A value stream is the complete sequence of activities, decisions, handoffs, and information flows through which work creates and delivers value to a customer or user.
BEAMhas part · BEAM is the virtual machine and runtime environment that executes Erlang-family programs and applications.
modulehas part · A module is a distinct, bounded software unit that groups related code or functionality and provides an organizational or interaction boundary within a larger system.

This explainer was generated by Manning's knowledge graph from the text of Contract Testing in Action. The section links point to the parts of the book it draws on.