The Importance of JSON Processing

Why JSON is the Standard

JSON has become the standard in modern web development as a lightweight, human and machine-readable data exchange format. Used everywhere from REST APIs to NoSQL databases.

JSON Advantages:

• Lightweight and fast parsing
• Language independent
• Human readable
• JavaScript compatibility

JSON Processing Best Practices

1. Proper indentation: 2 or 4 spaces for readability
2. Validation: Structure verification with schemas
3. Compression: Use minified version in production
4. Error handling: Proper parse error handling

API Development and Testing

RESTful API Design Principles

• Resource-oriented: URLs represent resources
• Proper HTTP methods: GET, POST, PUT, DELETE
• Status codes: Return appropriate HTTP status codes
• Versioning: Maintain API backward compatibility

API Test Automation

Automated API testing is essential for efficient development.

Test Types:

• Unit tests: Individual endpoint verification
• Integration tests: Multiple API coordination
• Load tests: Performance and scalability
• Security tests: Vulnerability detection

SQL and Database Optimization

Importance of SQL Formatting

Readable SQL makes debugging and maintenance easier.

Formatting Principles:

• Keywords in uppercase
• Proper indentation
• Split complex queries into multiple lines
• Use comments

Efficient Debugging Techniques

Importance of Log Analysis

Proper logging is key to quick problem identification and resolution.

Log Levels:

• ERROR: Errors and exceptions
• WARN: Potential issues
• INFO: Important events
• DEBUG: Detailed diagnostic information

Log Analysis with Regular Expressions

Regular expressions are essential for extracting necessary information from complex log files.

Common Patterns:

• Error detection: ERROR.*Exception
• Timestamp extraction: \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}
• IP addresses: \d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}
• UUID: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

Security and Best Practices

Utilizing Hash Calculations

Use hash functions for data integrity verification and security enhancement.

Recommended Algorithms by Use Case:

• File integrity: SHA-256
• Passwords: bcrypt, Argon2
• Fast hashing: xxHash
• Cryptographic signatures: SHA-512

Proper Use of Base64 Encoding

Base64 is used to safely transfer binary data in text format.

Considerations:

• Base64 is not encryption
• Data size increases by ~33%
• Consider URL-safe Base64
• Consider performance impact