APIs

General

• HTTP Request Caching
  • ETag Header
  • Last-Modified Header
• Common HTTP Status Codes
• Connection Timeout and Response Timeout
• Slug

RESTful APIs

• SOAP and REST
• PUT and PATCH
• HEAD Method
• OPTIONS Method
• Maintaining Versions

GraphQL

• What is GraphQL?
• Key Components of GraphQL
• Designing GraphQL Schema in Java
• Handling Data Fetching and Optimizing in GraphQL