Why we picked WireGuard, and what we'd do differently.
Three years in, the protocol still feels right. The control plane around it is what we'd rebuild.
Apoxy / Field notesNotes from
Notes from
the edge.
Engineering posts, architecture writeups, and the occasional opinion. Written by people who run the proxy.
01FeaturedThis week
FIG. 01 — TARGET
∅ 339 · 14 min read
∅ 339 · 14 min readHow we route 12.4 million requests per second through a single edge worker.
A walk through the architecture of our hottest path — from QUIC ingress to the WebAssembly sandbox and back. Where we cheated, where we didn't, and the three benchmarks that lied to us.
02ArchiveMost recent first
A boring case for boring filters.
Most production middleware is a header rewrite, a cookie parse, and a redirect. Make those one-line filters first.
The case for flat pricing in API infrastructure.
Why we put $0.05/GB and $1/M on the homepage instead of "Contact sales." A short post on aligning incentives.
Gateway API, three years later.
A field report from teams who migrated off Ingress in 2023. What stuck. What broke. What we'd warn you about.
OTLP-native, all the way down.
How we replaced four different log formats with one OpenTelemetry pipeline. Spoiler: it took longer than we said it would.
Why a proxy, and not a sidecar.
Sidecars solved a real problem in 2018. The cost surface they leave behind is harder to defend in 2026. Here's our take.
Cold-start budgets in a Wasm world.
We measured 200ms cold starts and asked: where is the time actually going? Most of it isn't where you'd guess.
QUIC at the edge: what we learned shipping HTTP/3.
A review of the gnarly bits — congestion control, MTU discovery, and what happens when the middlebox lies about UDP.
Header-based routing without the regex graveyard.
A small DSL we wrote so platform teams stop writing 80-character regex predicates and instead write three readable lines.
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