Request Guide | Overview

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Request Management

A RequestManager receives a request and manages fulfillment via configured handlers. It may be used standalone from the rest of EmberData and is not specific to any library or framework.

flowchart LR
    A[fa:fa-terminal App] <--> B{{fa:fa-sitemap RequestManager}}
    B <--> C[(fa:fa-database Source)]

Each handler may choose to fulfill the request using some source of data or to pass the request along to other handlers.

flowchart LR
    A[fa:fa-terminal App] <--> B{{fa:fa-sitemap RequestManager}}
    B <--> C(handler)
    C <--> E(handler)
    E <--> F(handler)
    C <--> D[(fa:fa-database Source)]
    E <--> G[(fa:fa-database Source)]
    F <--> H[(fa:fa-database Source)]

The same or a separate instance of a RequestManager may also be used to fulfill requests issued by EmberData

flowchart LR
    A[fa:fa-terminal App] <--> D{fa:fa-code-fork Store}
    B{{fa:fa-sitemap RequestManager}} <--> C[(fa:fa-database Source)]
    D <--> E[(fa:fa-archive Cache)]
    D <--> B
    click D href "https://github.com/emberjs/data/tree/main/packages/store" "Go to @ember-data/store" _blank
    click E href "https://github.com/emberjs/data/tree/main/packages/json-api" "Go to @ember-data/json-api" _blank
    style D color:#58a6ff;
    style E color:#58a6ff;

When the same instance is used by both this allows for simple coordination throughout the application. Requests issued by the Store will use the in-memory cache and return hydrated responses, requests issued directly to the RequestManager will skip the in-memory cache and return raw responses.

flowchart LR
    A[fa:fa-terminal App] <--> B{{fa:fa-sitemap RequestManager}}
    B <--> C[(fa:fa-database Source)]
    A <--> D{fa:fa-code-fork Store}
    D <--> E[(fa:fa-archive Cache)]
    D <--> B
    click D href "https://github.com/emberjs/data/tree/main/packages/store" "Go to @ember-data/store" _blank
    click E href "https://github.com/emberjs/data/tree/main/packages/json-api" "Go to @ember-data/json-api" _blank
    style D color:#58a6ff;
    style E color:#58a6ff;

To see code examples of how to use RequestManager see the basic usage guide.

To see how to start migrating your application to use RequestManager see the incremental adoption guide.

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• Previous ← Intro: What Is a Request?
• Next → ?
• ⮐ Requests Guide