Apicurio Blog
Beyond OpenShift: Making Apicurio Registry Work with Any OAuth Provider via Dex ↗
Connecting identity providers through an OIDC bridge, and the practical differences between authentication, identity and authorization.
Writing
Notes from the implementation.
Full articles on distributed systems, data contracts and open-source infrastructure, connected to the code and tests behind them.
Browse Distributed Deep Dives ↗Elsewhere / Apicurio Blog
Apicurio Blog
OpenTelemetry Distributed Tracing with Apicurio Registry ↗
Following schema-related requests through an event-driven application with distributed tracing.
Apicurio Blog
Apicurio Registry Joins the Cloud Native Computing Foundation ↗
The project's move into the CNCF Sandbox and the work behind its open-source stewardship.
On this site
Engineering notes.
Rebuilding a Search Index While PostgreSQL Keeps Changing
Seven real CDC events exercise rebuilding, ordered replay, deletion, alias cutover and a write after the switch.
Who Owes the Next Action? Making Pull Request Hand-offs Explicit
Distinguish waiting on an author from waiting on a maintainer, using Apicurio's published lifecycle and a real review.
Validating Before Kafka: What a Schema-Checking Proxy Changes for Producers
What mixed-batch rejection, direct broker access and Registry outages mean for a Kafka producer's failure handling.
One Keycloak Realm, Two Permission Models: Kafka and Apicurio Registry
Real token and authorization checks across Keycloak, Kafka and Registry, including the negative control that exposed disabled authentication.
Before and After the Sandbox Vote: Preparing an Open-Source Project for CNCF
The public deferral, renewed application and onboarding records behind Apicurio Registry's Sandbox journey.
Discovering Agents Is Only Half the Job: A Connected MCP and A2A Workflow
A connected Quarkus workflow separates endpoint discovery, Agent Card publication and runtime behavior.
The Sink Says RUNNING. Where Is My Data? Following CDC into Iceberg
Follow an event through capture, consumption, an Iceberg snapshot and a query instead of equating connector health with progress.
Why Are Predictions Late? Isolating Backlog in Spark Structured Streaming
A measured Spark experiment shows why removing processing delay can leave a source-admission bottleneck.
Model Agreement Is a Diagnostic Signal, Not Ground Truth
Use model disagreement to guide investigation without confusing agreement, confidence or throughput with accuracy.
A2A or MCP? Compare the Caller Contract, Not the Label
The same deterministic function through official A2A and MCP SDKs: compare discovery, errors, progress and cancellation.
The Schema Still Passes: Testing Feature Meaning with Apicurio Registry
Pair a real Avro compatibility rejection with a units-normalization test at the inference-input boundary.
A Git Revert Is Not a Prompt Rollback: Version Selection with Apicurio Registry
Version selection, cache refresh and a real Ollama evaluation that blocked every candidate instead of weakening the acceptance criteria.
Avro References: Resolve the Types Before Checking the Contract
How Avro named types, registry references and version selection interact—and which boundaries need separate tests.