Automating Data Ingestion with a RAG Flywheel
Automating schema mapping for diverse supplier data using a RAG Flywheel and LLMs.
AI & ML10 min read
ZE
Zalando Engineering
ProTech stories from Europe's fashion platform.
This is a Pro source. Free readers see summaries; Pro members read everything.
Unlock
Thundering herd of circuit breakers
A client side circuit breaker stays open for hours, blocking 95% of traffic, and won't close. Our service shows no sign of being unhealthy. To understand the anomaly, we build a custom span visualizer on top of OpenTelemetry trace data and find a circuit breaker trap that our existing dashboards don't reveal.
DevOps & SRE9 min read
Agentic Platform: Open-Sourcing the Agentic Identity Broker
As part of our agentic platform initiative, we are open sourcing the Agentic Identity Broker, a central component for user to agent delegation, consent, and token exchange that lets agents act on behalf of users without ever holding provider tokens.
AI & ML8 min read
Scaling Reliable Experimentation in a Two-Sided AdTech Marketplace: ZMS Budget Split
Budget Split and Orthogonal Concurrency reduce budget cannibalization bias and enable reliable concurrent experiments in two sided AdTech marketplaces.
AI & ML5 min read
Agentic Engineering at Zalando: a snapshot
We look back at our journey of agentic engineering at Zalando, sharing our learnings and approaches that worked well for us in the past 2.5 years.
AI & ML17 min read
From Homegrown to Flink: Migrating a Stateful Ad Event Join at Scale
We replaced a homegrown in memory stream join with Apache Flink, halved our infrastructure cost, and eliminated in memory state loss on restarts.
Cloud & Infrastructure11 min read
Client-Side Load Balancing at a Million Requests Per Second
How we built an in process client side load balancer for a million requests per second of internal fan out traffic, what we layered on top (N ring fade in, occupancy based bounded load, and AZ aware routing with a latency health factor), and how hardening that path cut cost and made the service resilient to the…
Cloud & Infrastructure28 min read
Introducing Lightstep UQL to PromQL Translator
Automate telemetry query migration from Lightstep UQL to PromQL with this open source Go SDK and Web UI.
Web Development3 min read
Rejecting Invalid Ingress Routes at Apply Time
How Zalando used Skipper as a validating admission webhook to reject invalid filters and predicates at apply time, and what it took to make that safe on the Kubernetes control plane path.
Cloud & Infrastructure5 min read
Search Quality Assurance with AI as a Judge
Deep dive into how Zalando builds a search quality assurance framework with LLM as a judge to evaluate the search quality at scale with high coverage and multi language support.
AI & ML13 min read
You're all caught up ✓