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Kenton Varda

8 articles by Kenton Varda.

Performance — Unpacking Cloudflare Workers CPU Performance Benchmarks

Unpacking Cloudflare Workers CPU Performance Benchmarks

Cloudflare investigated CPU performance benchmark results for Workers, uncovering and fixing issues in infrastructure, V8 garbage collection, and OpenNext optimizations. These improvements have made Cloudflare Workers faster for all customers.

KVKenton VardaKenton Varda·October 14, 2025Performance
Databases — Zero-latency SQLite storage in every Durable Object

Zero-latency SQLite storage in every Durable Object

Traditional cloud storage is inherently slow because it is accessed over a network and must synchronize many clients. But what if we could instead put your application code deep into the storage layer, such that your code runs where the data is stored? Durable Objects with SQLite do just that.

KVKenton VardaKenton Varda·September 26, 2024Databases
Security — Why Workers environment variables contain live objects

Why Workers environment variables contain live objects

Bindings don't just reduce boilerplate. They are a core design feature of the Workers platform which simultaneously improve developer experience and application security in several ways. Usually these two goals are in opposition to each other, but bindings elegantly solve for both at the same time

KVKenton VardaKenton Varda·April 1, 2024Security
Performance — Durable Objects: Easy, Fast, Correct — Choose three

Durable Objects: Easy, Fast, Correct — Choose three

When multiple clients access the same storage concurrently, race conditions abound. Durable Objects can make it easier. We recently rolled out improvements to Durable Objects that automatically correct many common race conditions while actually making your code faster.

KVKenton VardaKenton Varda·August 3, 2021Performance