How to Implement caching on apollo-server-hapi graphql - caching

Question

i have graphql with apollo-server-hapi. i try to add cache control like below:
const graphqlOptions = {
schema,
tracing: true,
cacheControl: true,
};
but when i try to add cache option on schema base:
type Author #cacheControl(maxAge: 60) {
id: Int
firstName: String
lastName: String
posts: [Post]
}
i got this error message:
Error: Unknown directive "cacheControl".
can you help, what is the correct way to apply cache control on schema?
i follow instruction from below, but it seem didn't work.
apollo-cache-control

Answer 1

After learn more about caching on apollo graphql, basically, the issue was with makeExecutableSchema from apollo-server-hapi, didn't include directive for #cacheControl, so to make it work, we just need to define our own #cacheControl directive into graphql file, as below:
enum CacheControlScope {
PUBLIC
PRIVATE
}
directive #cacheControl (
maxAge: Int
scope: CacheControlScope
) on FIELD_DEFINITION | OBJECT | INTERFACE
type Author #cacheControl(maxAge: 60) {
id: Int
firstName: String
lastName: String
posts: [Post]
}

Answer 2

The following worked for me in "apollo-server-express": "^2.9.12" :
1.- Set global maximum cache:
var graphqlServer = new ApolloServer({
cacheControl: {
defaultMaxAge: 1000,
},
...
2.- Define the following directive in your schema:
// Schema (root query)
const Query = gql`
directive #cacheControl(
maxAge: Int,
scope: CacheControlScope
) on OBJECT | FIELD | FIELD_DEFINITION
enum CacheControlScope {
PUBLIC
PRIVATE
}
type Query {
...
3.- Finally, call it:
module.exports = `
type ArticlePage #cacheControl(maxAge: 801){
article(id: String) : Article
author(key: String) : Author
}`;
The trick is that #cacheControl(maxAge: 801) cannot be higher than defaultMaxAge: 1000.
Good Luck!

Answer 3

I was also apollo-server-lambda and the main issue comes from using makeExecutableSchema. The docs mention this is cause by schema stitching.
Unfortunately if you use something like graphql-middleware there is no way around this except for what hinduni mentions. Also make sure you are on apollo-server > 2.6.6.