RESTful Prime Numbers

Deployed to

https://prime-rest-java.herokuapp.com/

Test with reports

./gradlew clean test jacocoTestReport

Code coverage will be available at build/reports/jacoco/test/html/index.html. Now we have 99% code coverage.

IntegrationTests

./gradlew clean integrationTest

Build

./gradlew build

Build is available at build/libs/prime-rest-0.0.1-SNAPSHOT.jar

Run

java -jar build/libs/prime-rest-0.0.1-SNAPSHOT.jar

Wercker commands

• Dev

wercker dev --publish 8080

Above command will run the application in a docker container setup by wercker

• Build

wercker build

Content Negotiation

• PathExtension - *.xml and *.json
• Url parameter - mediaType=xml and mediaType=json
• Accept header
  • application/xml
  • application/json

Http Caching

• Prime numbers are can be cached at http level
• Cache-Control max-age set to high value (1 year)
• ETag filter enabled to check if document in modified

Performance Optimization

• Memoization technique applied for performance optimization
• Known primes are collected in memory to avoid recalculation of primality
• Even numbers are skipped from primality check, as 2 is the only even prime number

Limitations

• At the moment this can only give list of prime numbers till 2147483647, which is max limit of int type