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Stop debugging runtime NilPointerExceptions caused by malformed API payloads. Learn how to use Clojure Spec to validate data shapes and generate edge-case tests automatically.
Validate JSON payloads at every layer with JSON Schema. Learn how to pick the right draft, compose reusable schemas, and enforce contracts in Node.js and gateways. Avoid runtime errors and keep your API contracts reliable.
Learn how Meteor's Method simulation enables optimistic UI updates and how to prevent 'UI flicker' and security leaks when sharing logic between client and server.
Learn how to add a JSON Schema validator to a MongoDB collection, see a complete example of required and optional fields, and understand the limits and common pitfalls of this feature.
Learn how Ecto Changesets prevent data corruption by decoupling input casting and validation from database persistence in Elixir.
Stop relying on implicit API contracts. Learn how to use JSON Schema to enforce data integrity, handle polymorphism, and prevent breaking changes in distributed systems.
Stop chasing NullPointerExceptions through your stack trace. Learn how to use Clojure Spec to validate data at boundaries and instrument functions during development.
Stop chasing 'undefined' errors in your API. Learn how to use JSON Schema to enforce structural integrity, type safety, and polymorphic data validation before requests hit your logic.
Shows how to define specs, validate data at system edges, and use generative testing for confidence.
clojure
mongodb
ecto
json