Learn GROOVY with Real Code Examples

Use static compilation when possible

Avoid excessive metaprogramming

Prefer typed variables in hot code

Cache expensive expressions

Use Java classes for performance-critical parts

Sandbox Groovy scripts in Jenkins

Avoid insecure GroovyShell evaluation

Use script approval in CI

Validate user-supplied DSLs

Restrict file/system access

Custom logging

Gradle build scans

Jenkins pipeline logs

Script instrumentation

Metrics plugins

Use CodeNarc for linting

Unit test with Spock

Avoid excessive dynamic behavior

Use idiomatic Groovy operators

Prefer explicit imports