Junior
What is the difference between SOAP and REST?
sobes.tech AI
Answer from AI
SOAP:
- Protocol: Based on XML format, uses message protocol for information exchange. Strictly regulated by standards (WS-*).
- Transport: Can use various transport protocols (HTTP, SMTP, TCP, etc.). Preferably HTTP.
- Architecture: Based on messages and operations. Requires service description (WSDL).
- Reliability and security: Built-in standards for reliability (WS-ReliableMessaging) and security (WS-Security).
- Performance: Usually more resource-intensive and slower due to XML processing and additional standards.
- Complexity: More complex to implement and use. Requires special tools for message processing.
REST:
- Protocol: Architectural style, not a protocol. Usually uses HTTP as the transport and data transfer protocol.
- Transport: Strictly uses HTTP (GET, POST, PUT, DELETE, PATCH, HEAD).
- Architecture: Based on resources and their representations. Resources are identified by URI. Formal service description is not necessary (although OpenAPI/Swagger are often used).
- Reliability and security: Uses HTTP capabilities (e.g., TLS/SSL for security). Requires additional solutions for reliability.
- Performance: Usually lighter and faster due to standard HTTP methods and data formats (JSON, XML, plain text).
- Complexity: Simpler to implement and use. Based on existing web standards.
Main differences in the table:
| Characteristic | SOAP | REST |
|---|---|---|
| Type | Protocol | Architectural style |
| Data format | XML | JSON, XML, plain text, etc. |
| Transport protocol | Any (HTTP, SMTP, TCP, etc.) | HTTP |
| Architecture | Based on messages and operations | Based on resources and representations |
| Service description | WSDL | Not mandatory (often OpenAPI/Swagger) |
| Built-in reliability/security | Yes (WS-* standards) | No (uses HTTP capabilities) |
| Performance | Lower | Higher |
| Complexity | Higher | Lower |