Application Programming Interface (API)
An Application Programming Interface (API) enables interaction between software components.
Classification
- ComplexityMedium
- Impact areaTechnical
- Decision typeArchitectural
- Organizational maturityAdvanced
Technical context
Principles & goals
Use cases & scenarios
Compromises
- Integration May Fail
- Authentication Difficulties
- Lack of Documentation
- Use clear endpoint names
- Implement API versioning
- Introduce good error handling
I/O & resources
- API Endpoint
- Authentication Token
- Data Input Parameters
- Data Response
- Processed Events
- User Interface
Description
APIs are essential for modern software development as they enable different applications to communicate with each other. They provide standardized methods for data transfer, authentication, and interaction. APIs are implemented in many technologies, including web services, mobile applications, and more.
✔Benefits
- Increased Flexibility
- Reusable Components
- Faster Development
✖Limitations
- Dependency on External Services
- Security Risks During Data Transmission
- Potential Latency Issues
Trade-offs
Metrics
- Response Time
Time taken by the API to respond to a request.
- Throughput
Number of requests the API processes per second.
- Error Rate
Proportion of failed API requests.
Examples & implementations
Integration with Payment Providers
An example of how APIs are used to integrate payments between e-commerce platforms and payment providers.
Social Media APIs
APIs that allow developers to access and integrate social media functionalities into their applications.
Data Analysis Tools
Tools that utilize APIs to analyze and visualize data from various sources.
Implementation steps
Document API design
Develop according to specifications
Conduct tests
⚠️ Technical debt & bottlenecks
Technical debt
- Outdated authentication methods
- Insufficient test coverage
- Difficulties in maintenance
Known bottlenecks
Misuse examples
- Writing data directly into the API
- Not updating API documentation
- Missing authentication for sensitive data
Typical traps
- Too many requests in a short time
- Insufficient error logging
- Ignoring API usage policies
Required skills
Architectural drivers
Constraints
- • Technological Dependencies
- • Regulatory Requirements
- • Performance Requirements