Writings on tech, music and life by Konstantin Gredeskoul, aka 'kig'

The Case for Vertical Sharding

Wanelo's recent surge in popularity rewarded our engineers with a healthy stream of scaling problems to solve.

Among the many performance initiatives launched over the last few weeks, vertical sharding has been the most impactful and interesting so far.

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The Big Switch How We Rebuilt Wanelo from Scratch and Lived to Tell About It

The Wanelo you see today is a completely different website than the one that existed a few months ago. It’s been rewritten and rebuilt from the ground up, as part of a process that took about two months. We thought we’d share the details of what we did and what we learned, in case someone out there ever finds themselves in a similar situation, weighing the risks of either working with a legacy stack or going full steam ahead with a rewrite.

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