87 lines
2.6 KiB
Plaintext
87 lines
2.6 KiB
Plaintext
import { CardList } from "docs-ui"
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export const metadata = {
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title: `Cache Module`,
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}
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# {metadata.title}
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In this document, you'll learn what a Cache Module is and how to use it in your Medusa application.
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## What is a Cache Module?
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A Cache Module is used to cache the results of computations such as price selection or various tax calculations.
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The underlying database, third-party service, or caching logic is flexible since it's implemented in a module. You can choose from Medusa’s cache modules or create your own to support something more suitable for your architecture.
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### Default Cache Module
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By default, Medusa uses the [In-Memory Cache Module](./in-memory/page.mdx). This module uses a plain JavaScript Map object to store the cache data. While this is suitable for development, it's recommended to use other Cache Modules, such as the [Redis Cache Module](./redis/page.mdx), for production. You can also [Create a Cache Module](./create/page.mdx).
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---
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## How to Use the Cache Module?
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You can use the registered Cache Module as part of the [workflows](!docs!/learn/fundamentals/workflows) you build for your custom features. A workflow is a special function composed of a series of steps that guarantees data consistency and reliable roll-back mechanism.
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In a step of your workflow, you can resolve the Cache Module's service and use its methods to cache data, retrieve cached data, or clear the cache.
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For example:
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```ts
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import { Modules } from "@medusajs/framework/utils"
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import {
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createStep,
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createWorkflow,
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} from "@medusajs/framework/workflows-sdk"
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const step1 = createStep(
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"step-1",
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async ({}, { container }) => {
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const cacheModuleService = container.resolve(
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Modules.CACHE
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)
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await cacheModuleService.set("key", "value")
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}
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)
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export const workflow = createWorkflow(
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"workflow-1",
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() => {
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step1()
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}
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)
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```
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In the example above, you create a workflow that has a step. In the step, you resolve the service of the Cache Module from the [Medusa container](!docs!/learn/fundamentals/medusa-container).
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Then, you use the `set` method of the Cache Module to cache the value `"value"` with the key `"key"`.
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---
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## List of Cache Modules
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Medusa provides the following Cache Modules. You can use one of them, or [Create a Cache Module](./create/page.mdx).
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<CardList
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items={[
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{
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title: "In-Memory",
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href: "/infrastructure-modules/cache/in-memory",
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badge: {
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variant: "neutral",
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children: "For Development"
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}
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},
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{
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title: "Redis",
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href: "/infrastructure-modules/cache/redis",
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badge: {
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variant: "green",
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children: "For Production"
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}
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}
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]}
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/>
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