Spring I/O 2026: Durable, Observabable and Testable Spring AI Applications

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Transcript

1. Mauricio Salatino @salaboy Laurent Broudoux @lbroudoux SIMPLIFYING CLOUD-NATIVE APP TESTING ACROSS ENVIRONMENTS THE WORKSHOP
2. Before we start… • git clone https://github.com/salaboy/spring-io-2026-workshop • cd spring-io-2026-workshop/ • Run ./init-workshop.sh or ./init-workshop.ps1 • You need an ANTHROPIC_API_KEY • Create issues if you have questions
3. Workshop objectives • How to run all these tools in developer environment and keep a reasonable cognitive load? • Illustrate usage of modern development techniques (mocking, contract testing, containers testing, observability, …) • Managing complexity and deal with non-deterministic behavior.
4. Who we are! Mauricio Salatino @salaboy Laurent Broudoux @lbroudoux CNCF Ambassador, Java Champion, OSS & ecosystem @ DashO Cloud native Architect @ Postman Microcks founder
6. The AI/Cloud-native Spring Store Logical view Store 🛍 Warehouse 🗂 Shipping 🚚 LLM 🧠 󰠁 User check Inventory ask Shipment place Order orchestrate process
7. Step #1
8. Step-01 - Let’s start simple, no dependencies Store 🛍 Warehouse 🗂 Shipping 🚚 LLM 🧠 󰠁 User check Inventory ask Shipment place Order orchestrate process
9. Step-01 - Observing Spring AI Store 🛍 LLM 🧠 󰠁 User place Order orchestrate process Jaeger 👀 traces
10. Step-01 - Discover app & cut dependencies Store 🛍 LLM 🧠 󰠁 User place Order orchestrate process ❌ LLM integration can be slow, costly, tedious to use in CI environment… We can use simulations/mocked responses to speed-up the feedback loop when testing non-LLM areas
11. Microcks Turn artifacts into light & smart simulation INGEST PROVIDE MOCKS WELL-KNOWN ARTIFACTS 🧠 SMART MOCKS API Consumer and others
12. Step-01 - Discover app & cut dependencies Store 🛍 󰠁 User place Order Jaeger 👀 traces traces https://github.com/anthropics/anthropic-sdk-java/pull/315
13. Step #2
14. Step-02 - Plug the warehouse with MCP Store 🛍 Warehouse 🗂 Shipping 🚚 LLM 🧠 󰠁 User check Inventory ask Shipment place Order orchestrate process Warehouse MCP
15. Step-02 - Plug the warehouse with MCP Store 🛍 Warehouse 🗂 LLM 🧠 󰠁 User check Inventory place Order orchestrate process Warehouse MCP ❌ Mocks Contract Testing MCP Team can validate with no delay, in isolation. Backend Team can guarantee conformance with spec, ensure smooth integration.
16. Microcks Turn artifacts into Contract Testing Suite INGEST WELL-KNOWN ARTIFACTS AUTOMATIC TEST SUITE and others VALIDATE REAL API API v1.2 API v1.1 API v1.0 API Provider
17. Step-02 - Plug the warehouse with MCP Store 🛍 󰠁 User check Inventory place Order Warehouse MCP Jaeger 👀 traces traces traces
18. Step #3
19. Step-03 - Events, Dapr and more MCP Store 🛍 Warehouse 🗂 Shipping 🚚 LLM 🧠 󰠁 User check Inventory ask Shipment place Order orchestrate process Warehouse MCP Shipping MCP
20. Step-03 - Events, Dapr PubSub and more MCP Store 🛍 Warehouse 🗂 Shipping 🚚 LLM 🧠 󰠁 User check Inventory ask Shipment place Order orchestrate process Warehouse MCP Shipping MCP Kafka Dapr ✉ ✉ Dapr
21. Reshapr Turn artifacts into MCP Server INGEST PROVIDE MCP SERVERS ENTERPRISE-GRADE MCP SERVERS 🛡 NO CODE GEN!
22. Step-03 - Events, Dapr PubSub and more MCP Store 🛍 Shipping 🚚 󰠁 User ask Shipment place Order Shipping MCP Kafka Dapr ✉ ✉ Dapr Jaeger 👀 traces https://github.com/dapr/java-sdk/pull/1724
23. Step #4
24. Step-04 - Dapr Durable Workflows Store 🛍 LLM 🧠 󰠁 User ask Shipment place Order orchestrate process Dapr Kafka Dapr ✉ Warehouse 🗂 Shipping 🚚 check Inventory ✉ Dapr
25. Step #5
26. Step-05 - Running on Kubernetes Store 🛍 Anthropic.com 🧠 󰠁 User Dapr Kafka Warehouse MCP ↔ Shipping 🚚 PostgreSQL Warehouse 🗂 Otel Collector Cert Manager Infrastructure Dash0 👀 External Services
27. Wrap-up
28. Key Learnings 🤔 • Mocking & Contract Testing come together for cutting dependencies and providing with fast feedback loops • Observability is mandatory for understanding how distributed AI-infused apps are expected to work • Dapr provides powerful abstractions, making your application portable and your workflow durable • All of the above can run on your machine without a Kubernetes cluster!
29. THANK YOU! https://github.com/salaboy/spring-io-2026-workshop