API & Protocols
REST, GraphQL, WebSockets, gRPC, API design
API Authentication
API authentication strategies and implementation.
GraphQL
GraphQL queries, mutations, and schema basics.
gRPC
gRPC protocol buffers and service definition.
HTTP Methods
Common HTTP request and response headers.
OpenAPI/Swagger
OpenAPI specification for documenting APIs.
REST API
API design patterns and best practices.
SOAP
SOAP protocol structure and web services.
WebSockets
Advanced WebSocket patterns and Socket.io.