Logging calls, answers, errors

Logging calls, answers, errors

Each API call is a potential source of important information. To ensure reliability, security and quick diagnostics, we implement detailed logging of incoming and outgoing API requests, including parameters, headers, body, response status, errors and technical details.

This log system allows you to track system behavior in real time, audit users or external services, and speed up debugging in case of any failures.

What we log

Event type	What is fixed
Inbound Requests	Method, endpoint, parameters, IP, headers, body
Outgoing Responses	Response Code, Body, Headers, Runtime
Errors and exceptions	Type, description, stack trace, point of occurrence
Authorization	Token, user, validation result
Technical Metrics	Delays, Load, Call Rate, Retries

Technical implementation

JSON logging for automated processing
Integration with log storage systems (ELK Stack, Loki, PostgreSQL)
Support for logging by levels: INFO, DEBUG, ERROR, WARN
Ability to filter by endpoint, date, code, user
Configuring Alerts for Specific Errors or Response Times

Advantages for the team

Quickly isolate problems and failures
Audit of all actions: who, what, when called
Real-World API Performance Analysis
Ability to restore event context
An indispensable tool for technical support and DevOps commands

Where especially important

Projects with transactions, financials, user data
Platforms with external APIs and many calls
Complex architectures with microservices or distributed logic
Integrations where reliability and control of all communications is important

Logging calls, answers and errors is not just a record of data, but the basis of control and quality of API integration. We capture everything that happens so you can react quickly, scale confidently and work reliably.