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Showing posts from December, 2017

Stack overflow is built using ASP.NET, C#, SQL Server, Windows, IIS...

Irrespective of what technology we work with how many times have we landed on Stack Overflow / Stack Exchange website on a daily basis? If we ask this to any developer the answer would mostly be MANY times in a day :) Site was launched in 2008 and is built using Windows, SQL Server, IIS, and ASP.NET along with HAProxy, Redis, and ElasticSearch, all served via Fastly CDN. Fun Facts: 1.3 Billion page views per month They transfer ~55 TB data per month 4 SQL Servers (organized as 2 clusters) Stack Overflow serves 528 Million queries per day (Peak 11000 queries per second) Stack Exchange, Careers, meta serves 496 million queries per day (Peak 12800 queries per second) Over 360 databases with the same schema, which changes frequently They made use of Microsoft Bizspark program before getting graduated All their production traffic is served using physical servers &  Cloud services are being used only for storing encrypted offsite backups (Glacier) and for DNS (Route53)