/api-gateway

Primary LanguageJava

API-GATEWAY

  • brew install redis

  • vi /usr/local/etc/redis-sentinel.conf

  • vi /usr/local/etc/redis.conf

  • Start with: $>redis-server /usr/local/etc/redis.conf

  • Start sentinel $>redis-server /usr/local/etc/redis-sentinel.conf --sentinel

  • redis-cli -p 26379

  • SENTINEL get-master-addr-by-name mymaster

  • sentinel masters

  • dbsize

  • info memory

  • redis-benchmark -h localhost -p 6379 -q -n 1000 -a password

  • npm install -g redis-commander

  • redis-commander --redis-password=password

1 Glossary

  • Route: It is defined by an ID, a destination URI, a collection of predicates, and a collection of filters.

  • Predicate: Match on anything from the HTTP request, such as headers or parameters.

  • Filter: Can modify requests and responses before or after sending the downstream request.

Gateway Component

1. Route

management.endpoint.gateway.enabled=true # default value
management.endpoints.web.exposure.include= gateway

curl --location --request GET 'http://localhost:8024/api-gateway/configuration/config/customer/jdbc' --header 'Authorization: Basic QU5ITlQ6QU5ITlQtUEFTUw=='

1. Actuator

curl --location --request GET 'http://localhost:8024/actuator/gateway/routes'

curl --location --request GET 'http://localhost:8024/actuator/gateway/globalfilters'

curl --location --request GET 'http://localhost:8024/actuator/gateway/routefilters'

2. Creating and Deleting a Particular Route

POST: /gateway/routes/{id_route_to_create}
DELETE: /gateway/routes/{id_route_to_create}

3. Ordering

  • Order Number generated:

    • GlobalFilter based on method Order
    • Default GatewayFilter from 1 -> N
    • Normal GatewayFilter from 1 -> N

  • Execution Order

    • Different Order: smaller order will process earlier
    • Same order
      • GlobalFilters are ordered by file name (ABC) (scanning)
      • GlobalFilter priority (First)> Default GatewayFilter (Second) > Normal Gateway Filter (Third)

https://www.baeldung.com/java-digital-signature Ordering