On-demand revalidation in NextJs 14

In this video, we'll look at on-demand revalidation in NextJs 14 using `revalidateTag` and `revalidatePath` functions.

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👉🏼 Project source code (Github)

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Chapters
0:00 Intro
1:30 Cache revalidation
4:10 revalidatePath
6:45 revalidateTag
7:55 unstable_cache
9:00 Project code
15:30 Recap

[LehmannMr]

Actually it looks like you are the Bob Ross of programming videos.

Every thing seems to be so easy and sometimes I fall asleep while listening in my bed 😂😂😂

[tonyeneh]

Great video. I learnt a couple of things

[kazmi]

Whenever i recieve your channel's notification, I click on it and i always learned something new. Thanks Bahram.🙏

[mohsenlotfi]

It was handy, and also easy to understand. Thanks for sharing 👍

[RanNahmany]

Exactly what I was looking for - directly in my feed.

[wmw]

Great video.

Could you make a video with Clerk where signup in credentials, and add a role to the user by default? :) Or maybe choose like two different roles when signup, like consult, and busniess? :)

[adnn]

i hate these types of youtubers taht just read the documentation, wow so useful

[exposuredesignhelp]

A great clear video. Looking forward to the next one as I'm struggling with next caching when using rsc and revalidation - trying to work out which cache is sticking - is it the data cache or the router cache. Getting very inconsistent behaviour. Probably something I'm missing!

[KamranSA]

looking forward to caching video .. please keep as in-depth as possible .. cover server side caching as well ..

[RobertTerrell-li]

I noticed that on demand revalidation is currently used based on an event. When just doing simple fetches etc, do you recommend setting up time based revalidation?

[eualexslim]

Awesome. Can you make an example using the suspense component to simulate a skeleton loading and revalidate the cache? I have a bug, it seems that suspense does not work when i revalidate a tag or path, it only work on initial loading!

[ayush_code]

I have a question. I am using Django Rest Framework on backend and Next.js on frontend. When i hit the login api then after successful login, I receive accessToken and refresh token in json like this {"access": "xyz", "refresh": "xyz"}. I need to send the access token on every request to the backend server in Authorization header (headers: {Authorization: "Bearer token"}) . Where should I store the token in local storage or cookies. I am confused when I store in cookies I cannot send the request fom client components and when i store in local storage i cannot send the token with server components.

[Nomoflatland]

Hi! If i use this for example, im a manager and i have users that only me can read, if i put a tag on this like "user", any user that went to the same page gonna see my users cuz i fetched first? So the tags should be like "my-id-123-users"?

[Aleks-fpkq]

so revalidatePath will revalidate all data tags that are somehow referenced by the page on that path/route? Does it work if we have deeply nested calls to fetch or conditional fetching, as in, there are layers between the page and data layer calling fetch?

[Ramsundarrp]

Not able to revalidate the root path in the app build with pages router

[andrescardenas]

Does the cache still cache a fetch with the same params but with a different header, let's say if the bearer token has change but I want to still keep the last data no matter the header changed in the fetch, the tags would help with that?

[Deliverant]

How would u revalidate a dynamic path? for example i could have "/project/123", i want to revalidate that exact path. would the work?

[erasmusmensah]

At my workside we still use the "Pages" directory, and does this only apply to NEXTJS 14 or "App" directory

[Smooth]

Here you used a revalidate button to get updates from the CMS, what if we wanna revalidate on CMS updates but without the button?

[lostinthenarrativve]

Hey Hamed sorry for off-topic question man, but is it a good idea to learn React & node/express at the same time ? I know I wanna go full stack but some say I should first learn react to a decent level then begin learning backend, not sure what's the right call.