> For the complete documentation index, see [llms.txt](https://blog.sunilgudivada.dev/notebook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blog.sunilgudivada.dev/notebook/system-design/building-blocks.md).

# Building Blocks

- [Message](https://blog.sunilgudivada.dev/notebook/system-design/building-blocks/message.md)
- [Cache](https://blog.sunilgudivada.dev/notebook/system-design/building-blocks/cache.md)
- [Load Balancer Vs API Gateway](https://blog.sunilgudivada.dev/notebook/system-design/building-blocks/load-balancer-vs-api-gateway.md)