Using nextjs 14, what's the more efficient approach to call Google APIs? My concern is UX and loading times from API calls. Would using SWR work better than Redis? Should I use a combination of both? From what I understand, the cache for nextjs doesn't support caching on external API calls.
#Redis and/or SWR for Google API calls?
dusk lynx
river heathBOT
Hi @dusk lynx. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
Next.js provides several ways to fetch data, and the choice between SWR and Redis (or a combination of both) depends on your specific use case.
SWR is a React hook library for data fetching created by the team behind Next.js. It is highly recommended if you are fetching data on the client-side. It handles caching, revalidation, focus tracking, refetching on intervals, and more. Here's an example of how you can use SWR to fetch data:
import useSWR from 'swr'
const fetcher = (...args) => fetch(...args).then((res) => res.json())
function Profile() {
const { data, error } = useSWR('/api/profile-data', fetcher)
if (error) return <div>Failed to load</div>
if (!data) return <div>Loading...</div>
return (
<div>
<h1>{data.name}</h1>
<p>{data.bio}</p>
</div>
)
}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/data-fetching/client-side#client-side-data-fetching-with-swr))
On the other hand, Redis can be used as a custom cache handler in Next.js. This can be useful if you want to cache data on the server-side. Here's an example of how you can use Redis as a cache handler:
const client = new Redis(url);
const redisCache = {
name: "redis-cache",
async get(key) {
console.log("requesting", key);
const result = await client.get(key);
return JSON.parse(result);
},
async set(key, value, maxAge) {
console.log("setting", key, value, maxAge);
await client.set(key, JSON.stringify(value), "EX", maxAge);
},
};
return {
cache: [redisCache],
useFileSystem: true,
};
(Source: Github Issue (https://github.com/vercel/next.js/issues/58094))
As for caching external API calls, you can opt individual fetch into caching by setting the cache option to force-cache:
// Opt out of caching
fetch(`<https://...`,> { cache: 'force-cache' })
(Source: Next.js Docs (https://nextjs.org/docs/app/building-your-application/caching#fetch-optionscache))
In conclusion, both SWR and Redis can be used to improve the UX and loading times from API calls in Next.js. The choice between them (or a combination of both) depends on whether you want to fetch data on the client-side or server-side, and whether you want to cache data in the browser or on the server.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath I'm currently caching the data on server components and calling that data on client components for rendering, interactivity, and forms. Should I use SWR and Redis? One or ther other?
river heathBOT
Let me check the knowledge base for you. One moment! :books:
If you're already caching data on server components and using that data on client components, you might find SWR particularly useful. SWR provides a set of features like caching, revalidation, focus tracking, refetching on intervals, and more, which can be beneficial for client-side data fetching and can improve the user experience by providing fast, efficient data updates.
Here's an example of how you can use SWR to fetch data:
import useSWR from 'swr'
const fetcher = (...args) => fetch(...args).then((res) => res.json())
function Profile() {
const { data, error } = useSWR('/api/profile-data', fetcher)
if (error) return <div>Failed to load</div>
if (!data) return <div>Loading...</div>
return (
<div>
<h1>{data.name}</h1>
<p>{data.bio}</p>
</div>
)
}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/data-fetching/client-side#client-side-data-fetching-with-swr))
On the other hand, Redis can be a good choice if you want to manage server-side caching more granularly. However, integrating Redis might require more setup and maintenance compared to using SWR.
In conclusion, if your primary concern is client-side data fetching, SWR would be a great fit. If you need more control over server-side caching, you might want to consider Redis. You could also use a combination of both, depending on your specific needs.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath the data that is stored in the cache within a server component is coming from an API call from another server component that's using server actions. What would be the best way to use Redis on the server component via the server action and the client component using SWR?
river heathBOT
Let me check the knowledge base for you. One moment! :books:
In your case, you can use Redis in your server component to cache the data from the API call. This data can then be fetched in your client component using SWR. Here's a general idea of how you can do this:
- Server Component (with Server Actions): Use Redis to cache the data from the API call.
// Server Action
async function fetchData() {
"use server";
// Fetch data from API
const data = await fetchFromAPI();
// Cache data in Redis
await redisCache.set('key', JSON.stringify(data), 'EX', maxAge);
return data;
}
(Source: Github Issue (https://github.com/vercel/next.js/issues/58094))
- Server Component: Call the server action and return the data.
function ServerComponent() {
const data = fetchData();
// Pass data to client component
return <ClientComponent data={data} />;
}
- Client Component: Use SWR to fetch the data from the server component.
import useSWR from 'swr';
function ClientComponent({ data }) {
const { data, error } = useSWR('/api/data', fetcher, { initialData: data });
// Render data
}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/data-fetching/client-side#client-side-data-fetching-with-swr))
In this setup, Redis is used to cache the data on the server-side, and SWR is used to fetch the data on the client-side. This allows you to take advantage of the caching features of both Redis and SWR, and can help to improve the performance of your application.
Please note that the code snippets above are simplified and may need to be adjusted to fit your specific use case.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath but I'm not using /api/ dir. The server actions are in a lib folder.
river heathBOT
Let me check the knowledge base for you. One moment! :books:
If your server actions are located in a lib directory, you can still use them in a similar way. The key point is to ensure that the server action that fetches and caches data in Redis is called in your server component, and then the data is passed to the client component where it can be fetched using SWR.
Here's a general idea of how you can do this:
- Server Action (in
libdirectory): Use Redis to cache the data from the API call.
// lib/actions.js
"use server";
import { redisCache } from './redis'; // assuming you have a redis setup in your lib directory
export async function fetchData() {
// Fetch data from API
const data = await fetchFromAPI();
// Cache data in Redis
await redisCache.set('key', JSON.stringify(data), 'EX', maxAge);
return data;
}
(Source: Github Issue (https://github.com/vercel/next.js/issues/58094))
- Server Component: Import and call the server action and return the data.
import { fetchData } from '../lib/actions';
function ServerComponent() {
const data = fetchData();
// Pass data to client component
return <ClientComponent data={data} />;
}
- Client Component: Use SWR to fetch the data from the server component.
import useSWR from 'swr';
function ClientComponent({ data }) {
const { data, error } = useSWR('/api/data', fetcher, { initialData: data });
// Render data
}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/data-fetching/client-side#client-side-data-fetching-with-swr))
In this setup, Redis is used to cache the data on the server-side, and SWR is used to fetch the data on the client-side. This allows you to take advantage of the caching features of both Redis and SWR, and can help to improve the performance of your application.
Please note that the code snippets above are simplified and may need to be adjusted to fit your specific use case.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath So I have to use the API route in nextjs 14? I can't just use the server action?
river heathBOT
Let me check the knowledge base for you. One moment! :books:
In Next.js 14, you can indeed use server actions without the need for API routes. Server actions allow you to define asynchronous server functions that can be called directly from your components, without needing to manually create an API route. This can simplify your data fetching and mutation logic.
Here's an example of a server action:
export async function GET(request: Request) {}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/upgrading/app-router-migration#api-routes))
In your case, you can define a server action that fetches data from the Google API and caches it in Redis. Then, in your client component, you can use SWR to fetch this data.
However, please note that the SWR hook is designed for client-side data fetching. If you're fetching data in a server component (using server actions), you might not need SWR. You can simply use the data returned by the server action directly in your component.
If you previously used API routes to call an external API from the client, you can now use server components instead to securely fetch data.
import { fetchData } from '../lib/actions'; // your server action
function ServerComponent() {
const data = fetchData(); // call your server action
// Pass data to client component
return <ClientComponent data={data} />;
}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/upgrading/app-router-migration#api-routes))
In this setup, the server action fetches and caches the data, and the server component passes this data to the client component. This allows you to take advantage of the caching features of Redis and the data fetching capabilities of server actions, and can help to improve the performance of your application.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath I'm fetching data in a server component using server actions and passing that data as props to the client component for rendering and forms etc. Would SWR be a better solution? Do I need to use an API route handler in nextjs 14 or can I use SWR with server actions?
river heathBOT
Let me check the knowledge base for you. One moment! :books:
In Next.js 14, you can use server actions to fetch data in a server component and pass that data as props to a client component. This is a recommended approach as it allows you to fetch data securely on the server and only send the necessary data to the client.
Here's an example of how you can do this:
// Server Action
"use server";
export async function fetchData() {
// Fetch data from API
const data = await fetchFromAPI();
return data;
}
// Server Component
import { fetchData } from '../lib/actions';
function ServerComponent() {
const data = fetchData();
// Pass data to client component
return <ClientComponent data={data} />;
}
// Client Component
function ClientComponent({ data }) {
// Render data
}
(Source: Next.js Docs (https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations#passing-actions-as-props))
SWR is a React hook library for data fetching that is highly recommended if you are fetching data on the client-side. It provides features like caching, revalidation, focus tracking, refetching on intervals, and more. However, if you're already fetching data in a server component using server actions, you might not need SWR. You can simply use the data returned by the server action directly in your component.
If you still want to use SWR in your client component, you can do so by fetching the data from an API route or a third-party API. But in this case, since you're already fetching data in the server component, you might not need to fetch the data again in the client component.
In conclusion, if you're fetching data in a server component using server actions and passing that data to a client component, you might not need to use SWR or an API route handler. You can simply use the data returned by the server action directly in your client component.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath The issue is that the API data call takes a long time and the goal would be to improve UX and load time when calling data. Since I'm using a 3rd party library, what's the best and most efficient option? SWR, server actions to props on the client, or something else?
river heathBOT
Let me check the knowledge base for you. One moment! :books:
If the API data call takes a long time and your goal is to improve UX and load time, you might want to consider a combination of server actions, caching with Redis, and SWR.
- Server Actions with Redis: Use server actions in your server component to fetch data from the API and cache it in Redis. This way, subsequent requests for the same data can be served from the cache, which can significantly reduce the load time.
// Server Action
"use server";
import { redisCache } from './redis'; // assuming you have a redis setup
export async function fetchData() {
// Fetch data from API
const data = await fetchFromAPI();
// Cache data in Redis
await redisCache.set('key', JSON.stringify(data), 'EX', maxAge);
return data;
}
(Source: Github Issue (https://github.com/vercel/next.js/issues/58094))
- SWR in Client Component: In your client component, use SWR to fetch the data. SWR provides features like caching, revalidation, focus tracking, refetching on intervals, and more, which can help to improve the UX.
import useSWR from 'swr';
function ClientComponent({ data }) {
const { data, error } = useSWR('/api/data', fetcher, { initialData: data });
// Render data
}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/data-fetching/client-side#client-side-data-fetching-with-swr))
In this setup, the server action fetches and caches the data, and the client component fetches the data using SWR. This allows you to take advantage of the caching features of both Redis and SWR, and can help to improve the performance of your application.
Please note that the code snippets above are simplified and may need to be adjusted to fit your specific use case.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath explain to me how caching works on third party APIs like Google APIs that use secrets.
river heathBOT
Let me check the knowledge base for you. One moment! :books:
Caching works by storing the response of a request so that subsequent requests can be served faster. When it comes to third-party APIs like Google APIs that use secrets, the caching mechanism doesn't change, but you need to ensure that you're handling your secrets securely.
Here's a general idea of how you can cache responses from a third-party API:
- Make a request to the API: When you make a request to the API, you'll include your secret (like an API key) in the request. This secret should be stored securely and not exposed to the client.
const response = await fetch('<https://api.google.com/some-endpoint',> {
headers: {
'Authorization': `Bearer ${YOUR_SECRET}`
}
});
- Store the response in cache: Once you receive the response from the API, you can store it in your cache. The way you do this will depend on what caching mechanism you're using. For example, if you're using Redis, you might do something like this:
const data = await response.json();
await redisCache.set('key', JSON.stringify(data), 'EX', maxAge);
(Source: Github Issue (https://github.com/vercel/next.js/issues/58094))
- Retrieve the response from cache: The next time you need to make the same request, you can first check if the response is in your cache. If it is, you can return the cached response instead of making a new request to the API.
const cachedResponse = await redisCache.get('key');
if (cachedResponse) {
return JSON.parse(cachedResponse);
}
// If the response is not in cache, make a new request to the API
This process can significantly speed up your application by reducing the number of requests you need to make to the third-party API.
Please note that while caching can improve performance, it's important to consider the privacy and security implications. Be careful not to cache sensitive information, and ensure that your cache is secure. Also, make sure to respect the API's caching headers and policies to avoid serving stale data.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
dusk lynx
@river heath in your example you use redis to cache third party APIs like Google. Can nextjs use it's caching on 3rd party APIs?
river heathBOT
Let me check the knowledge base for you. One moment! :books:
Yes, Next.js provides built-in caching mechanisms that can be used with third-party APIs. However, it's important to note that Next.js caching is primarily designed for server-side rendering (SSR) and static site generation (SSG), and it works best with data that is fetched during these processes.
For example, in SSR, Next.js caches the HTML output of a page and reuses it for subsequent requests. In SSG, Next.js generates and caches the HTML at build time and serves it for all requests.
Here's an example of how you can use Next.js caching with a third-party API:
export async function getServerSideProps(context) {{
const res = await fetch(`<https://api.google.com/some-endpoint`>)
const data = await res.json()
// By returning { props: data }, the component
// will receive `data` as a prop at build time
return {{ props: data }}
}}
(Source: Next.js Docs (https://nextjs.org/docs/pages/building-your-application/data-fetching/server-side#server-side-data-fetching-with-getserversideprops))
In this example, the data from the Google API is fetched at build time, and the HTML output of the page is cached by Next.js.
However, if you need more control over your caching strategy (for example, if you want to cache individual API responses or share a cache across multiple instances of your application), you might want to consider using a dedicated caching solution like Redis.
It's also worth noting that Next.js provides a fetch option called options.cache that you can use to opt individual fetch into caching by setting the cache option to force-cache.
// Opt out of caching
fetch(`<https://...`,> {{ cache: 'force-cache' }})
(Source: Next.js Docs (https://nextjs.org/docs/app/building-your-application/caching#fetch-optionscache))