APISIX API Versioning Guide
Introduction
API versioning is crucial for maintaining backward compatibility while evolving your APIs. APISIX provides multiple strategies for implementing API versioning effectively.
Prerequisites:
- APISIX installed and configured
- Basic understanding of HTTP routing
- Knowledge of APISIX route configurations
URI-based Versioning
Path-based Version Control
{
"uri": "/v1/users/*",
"upstream": {
"type": "roundrobin",
"nodes": {
"backend-v1:8080": 1
}
}
}
{
"uri": "/v2/users/*",
"upstream": {
"type": "roundrobin",
"nodes": {
"backend-v2:8080": 1
}
}
}Header-based Versioning
Custom Header Version Control
{
"uri": "/users/*",
"vars": [
["http_api_version", "==", "v1"]
],
"upstream": {
"type": "roundrobin",
"nodes": {
"backend-v1:8080": 1
}
}
}Content Negotiation
Accept Header Versioning
{
"uri": "/users/*",
"vars": [
["http_accept", "==", "application/vnd.company.api-v1+json"]
],
"upstream": {
"type": "roundrobin",
"nodes": {
"backend-v1:8080": 1
}
}
}Advanced Version Routing
Multiple Version Support
{
"uri": "/users/*",
"plugins": {
"traffic-split": {
"rules": [
{
"match": [
{
"vars": [
["http_api_version", "==", "v2"]
]
}
],
"weighted_upstreams": [
{
"upstream": {
"type": "roundrobin",
"nodes": {
"backend-v2:8080": 1
}
},
"weight": 100
}
]
}
]
}
}
}Version Deprecation
Managing API Lifecycle
{
"uri": "/v1/*",
"plugins": {
"response-rewrite": {
"headers": {
"Deprecation": "true",
"Sunset": "Sat, 31 Dec 2023 23:59:59 GMT",
"Link": "; rel=\"successor-version\""
}
}
}
}Best Practices
Versioning Guidelines
- Choose a consistent versioning strategy
- Document version changes clearly
- Maintain backward compatibility
- Plan for version deprecation
- Monitor version usage
