Add ETag sample code and Blog #929
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hamdaankhalid
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Jan 19, 2025
hamdaankhalid
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badrishc
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Jan 22, 2025
| If you're looking to: | ||
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| 1. **Reduce network bandwidth utilization for caching.** | ||
| 2. **Avoid the cost of transactions when working with non-atomic values in your cache store.** |
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As discussed, we can add the case of maintaining a consistent cache with a backend database that also supports ETags.
badrishc
reviewed
Jan 22, 2025
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| slug: etags-when-and-how | |||
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Might be a good idea to link to the blog post from the documentation page for etags.
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| #### High-Level Diagram | ||
| ``` | ||
| (server 1)----[server 1 reads from cache]----(cache) | ||
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| [server 2 writes to the cache, invalidating whatever server 1 had read] | ||
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| (server 2) | ||
| ``` | ||
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| #### Sequence Diagram | ||
| ``` | ||
| server 1 cache server 2 | ||
| 1. initial read from cache for k1-----------------------> | ||
| 2. <----------------------------------------Send Data and ETag | ||
| <-------------------------update value for k1 (invalidates k1) | ||
| 3. second read to cache for k1 -------------------------> | ||
| <--------------------------------------(What is sent back?) | ||
| ``` |
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Can these diagrams be done with Mermaid? Docusaurus seems to support it.
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Indeed, we're already using mermaid in the website. For example: https://microsoft.github.io/garnet/docs/dev/configuration
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Blog and Sample Code as reference implementation of OCC and Cache invalidation scenario