Shared ISR storage and revalidation of multiple instances #34517
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Hi I am very excited to see On-demand Incremental Static Regeneration is finally here 🎉. So now, that this is possible: How can I invalidate the cache of multiple Next.js instances at once? Is there a way I can share the ISR cache between multiple Next.js instances? I use multiple Next.js instances for scaling (SSR/ISR are both used at the moment in a simple docker compose + Traefik setup). Am I correct that only an API handler can invalidate the cache? My plan would be to create a simple job that polls a shared storage which holds paths that need to be validated. But this is more challenging if we can only do it in a request context. |
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Replies: 4 comments 6 replies
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Hi Michael, did you figure out how to handle this situation ? I have the same issue... |
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I have since changed my workplace, so I could not investigate this further. However, what @ijjk posted looks very promising. It not only makes clearing the ISR cache possible, but since it is shared, it comes with the benefit that revalidation only has to happen on one node/pod. |
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Hi, some related documentation for this and self-hosting has been added here https://nextjs.org/docs/basic-features/data-fetching/incremental-static-regeneration#self-hosting-isr |
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Thank you! That looks very promising. 😃 |
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Hmm that doesn't specify which specific folders need to share a mount. |
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Hi @shadiramadan do you figured out what folders need to be shared? We tried with |
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@kesonno - Late reply but I just ended up using redis for the page cache. |
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Thanks a lot 🙏
…On Sep 29, 2022 at 1:22 AM -0400, JJ Kasper ***@***.***>, wrote:
Hi, some related documentation for this and self-hosting has been added here https://nextjs.org/docs/basic-features/data-fetching/incremental-static-regeneration#self-hosting-isr
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Hey everyone – we have just published new documentation on self-hosting, including how to configure a custom cache handler for use with ISR / Data Cache in both the Pages and App Router. These docs go in depth about how other features like Image Optimization, Middleware, Environment Variables, Build Caching, and more work when self-hosted. There's also updated Docker based examples. https://nextjs.org/docs/app/building-your-application/deploying |
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Below nextjs doc link specifically talks about configuring the cache in nextjs, behind this we can use any cache i.e Redis etc. |
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Hey everyone – we have just published new documentation on self-hosting, including how to configure a custom cache handler for use with ISR / Data Cache in both the Pages and App Router. These docs go in depth about how other features like Image Optimization, Middleware, Environment Variables, Build Caching, and more work when self-hosted. There's also updated Docker based examples.
https://nextjs.org/docs/app/building-your-application/deploying