Overview
What this challenge is about.
Envoy WASM Filter for Per-Tenant Rate Limiting. Expert-level challenge in code. Writing production code that solves real engineering problems, earn a blockch...
The Brief
What you'll do, and what you'll demonstrate.
Build an Envoy WASM filter for per-tenant rate limiting that adds under 2 ms p99 overhead and fails open safely under Redis outage.
This is not a coding exercise. It is the work a software engineer does between a Jira ticket and a merged PR. That distinction matters to every hiring manager who has seen candidates solve LeetCode problems and none who have shipped production code under real constraints.
When you finish, you will have something most graduates do not: a real-world deliverable, verified by Ewance, that you can show to a hiring manager and say "I did this. Here is the proof."
Earning criteria — what you'll demonstrate
- Build WASM extensions for Envoy via the proxy-wasm-rust-sdk
- Integrate with external services from a WASM filter safely (timeouts, fail-open)
- Tune Redis-backed token-bucket rate-limit overhead under 2 ms p99
- Plan production readiness for custom data-plane code
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Service Mesh and Microservices Networking
Master · Networking
Strong alignment
This challenge maps to Service Mesh and Microservices Networking at the Master level. It sharpens the same practical skills your coursework expects — but in a real industry context with actual constraints and deliverables.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Envoy
Apply envoy to solve real industry problems and demonstrate production-level capability.
- Wasm
Apply wasm to solve real industry problems and demonstrate production-level capability.
- Rust Programming
Apply rust programming to solve real industry problems and demonstrate production-level capability.
- Rate Limiting
Apply rate limiting to solve real industry problems and demonstrate production-level capability.
- Service Mesh
Apply service mesh to solve real industry problems and demonstrate production-level capability.
- Performance Tuning
Apply performance tuning to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: