I'm configuring the caching on AWS API Gateway side to improve performance of my REST API. The endpoint I'm trying to configure is using a query parameter. I already enabled caching on AWS API Gateway side but unfortunately had to find out that it's ignoring the query parameters when building the cache key.
For instance, when I make first GET call with query parameter "test1"
GET https://2kdslm234ds9.execute-api.us-east-1.amazonaws.com/api/test?search=test1
Response for this call is saved in cache, and when after that I make call another query parameter - "test2"
GET https://2kdslm234ds9.execute-api.us-east-1.amazonaws.com/api/test?search=test2
I get again response for first call.
Settings for caching are pretty simple and I didn't find something related to parameters configuration.
How can I configure Gateway caching to take into account query parameters?
You need to configure this option in the Gateway API panel.
- Choose your API and click Resources.
- Choose the method and see the
URL Query String session.
- If there is no query string, add one.
- Mark the "caching" option of the query string.
- Perform the final tests and finally, deploy changes.
Screenshot
The following is how we can achieve this utilising SAM:
The end result in the AWS API Gateway console must display that the set caching checkbox is:
The *.yml
template for the API Gateway would be:
Resources:
MyApi:
Type: AWS::Serverless::Api
Properties:
StageName: Prod
CacheClusterEnabled: true
CacheClusterSize: '0.5'
MethodSettings:
- HttpMethod: GET
CacheTtlInSeconds: 120
ResourcePath: "/getData"
CachingEnabled: true
DefinitionBody:
swagger: 2.0
basePath: /Prod
info:
title: OutService
x-amazon-apigateway-policy:
Version: "2012-10-17"
Statement:
- Effect: Allow
Principal: "*"
Action: execute-api:Invoke
Resource:
- execute-api:/*/*/*
paths:
"/getData":
get:
# ** Parameter(s) can be set here **
parameters:
- name: "path"
in: "query"
required: "false"
type: "string"
x-amazon-apigateway-integration:
# ** Key is cached **
cacheKeyParameters:
- method.request.querystring.path
httpMethod: POST
type: aws_proxy
uri:
Fn::Sub: arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${OutLambda.Arn}/invocations
responses: {}
EndpointConfiguration: PRIVATE
Cors:
AllowHeaders: "'*'"