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> I've never set up a highly available Postgres and Redis cluster on dedicated hardware, but I can not imagine it's easier than doing it in AWS which is only a
by naasking 1y ago
> I've never set up a highly available Postgres and Redis cluster on dedicated hardware, but I can not imagine it's easier than doing it in AWS which is only a few clicks and I don't have to worry about OS upgrades and patches
Last I checked, stack overflow and all of the stack exchange sites are hosted on a single server. The people who actually need to handle more traffic than that are in the 0.1% category, so I question your implicit assumption that you actually need a Postgres and Redis cluster, or that this represents any kind of typical need.
- trenchpilgrim 1y agoSO was hosted on a single rack last I checked, not a single box. At the time they had an MS SQL cluster. Also, databases can easily see a ton of internal traffic. Think internal logistics/operations/analytics. Even a medium size company can have a huge amount of data, such as tracking every item purchased and sold for a retail chain.
- naasking 1y agoThey use multiple servers for redundancy, but they are using only 5-10% capacity per [1], so they say they could run on a single server given these numbers. Seems like they've since moved to the cloud though [2]. [1] https://www.datacenterdynamics.com/en/news/stack-overflow-still-on-prem-runs-qa-platform-off-just-nine-servers/ https://www.datacenterdynamics.com/en/news/stack-overflow-st... [2] https://stackoverflow.blog/2025/08/28/moving-the-public-stack-overflow-sites-to-the-cloud-part-1/ https://stackoverflow.blog/2025/08/28/moving-the-public-stac...