Consume Protocol Buffer messages with Ionic
Published: 14. January 2017 • Updated: 1. December 2018 • ionic, spring, java, javascript
Published: 14. January 2017 • Updated: 1. December 2018 • ionic, spring, java, javascript
Published: 26. January 2017 • Updated: 4. December 2018 • angular, ionic, spring, java, javascript
Example of form validation in an Ionic Angular application. How to create custom synchronous and asynchronous validators and how to validate data on the server with the Jakarta Bean Validation framework.
Published: 24. January 2017 • Updated: 17. March 2026 • spring, java
How to create RSS and Atom feeds with the Spring Framework and the ROME library
Published: 8. January 2017 • Updated: 17. March 2026 • java, spring
An introduction to Protocol Buffers, a binary data format developed by Google, and how to use it with Spring Integration
Published: 5. February 2017 • Updated: 17. March 2026 • ionic, spring, java, javascript
How to implement a JWT authentication system with Ionic/Angular and Spring Boot.
Published: 5. March 2017 • Updated: 17. March 2026 • java, spring
What are Server-Sent Events and how can you send them from a Spring Boot application
Published: 21. September 2017 • Updated: 4. December 2018 • spring, java, javascript, ionic
In this blog, we create REST services in Spring Boot and consume them in an Ionic app. We use the OpenAPI specification for generating API documentation and the client TypeScript code.
Published: 5. November 2017 • Updated: 3. December 2018 • ionic, java, spring, javascript
In this blog post we create an Ionic app that dynamically requests location data points from a Spring Boot server and displays them on an OpenStreetMap map. The data points are stored in a MongoDB database, and we take advantage of the geospatial query support to read the data points only for a certain area.
Published: 18. December 2017 • Updated: 17. March 2026 • ionic, javascript, java, spring
In this blog post I present two different ways to integrate speech recognition functionality into an Ionic app: the Web Speech API and RecordRTC together with the Google Cloud Speech API.
Published: 9. January 2018 • Updated: 21. March 2026 • java, javascript, pwa, spring
This blog post shows how to send browser push messages from a Spring Boot application with Firebase Cloud Messaging. The client uses a service worker, IndexedDB, and the current FCM token flow for web apps.
Published: 26. June 2018 • pwa, javascript, java, spring, ionic
This blog post takes a closer look at the Background Sync API, shows how to use it as a progressive enhancement, and presents an example that synchronizes data between an Ionic web application and a Spring Boot server application.
Published: 11. December 2018 • java, spring, ionic, javascript
This post shows how to upload images from an Ionic web application directly to Google Cloud Storage with V4 signed URLs and analyze them with Google Cloud Vision from a Spring Boot back end.
Published: 31. January 2019 • java, spring
In this blog post, we are going to set up a Spring Boot application with jOOQ and Flyway
Published: 15. May 2019 • java, spring, ionic
This post implements a stateless authentication system with Spring Security, Spring Boot, and an Angular/Ionic client
Published: 13. June 2019 • java, javascript, spring, ionic
How to create a frictionless password auto-login experience with the Credential Management API.
Published: 12. June 2019 • java, spring, javascript
How to expose version numbers, build timestamps, and Git metadata in Spring Boot and Angular applications
Published: 21. June 2019 • Updated: 5. April 2020 • java, spring
In this blog post, you learn how to build an authentication system with Spring Security that uses username/password and TOTP (Time-based One-Time Password) as a second factor
Published: 11. June 2019 • Updated: 19. March 2026 • java, javascript, spring, ionic
How to integrate tus.io implementations into JavaScript and Java applications to create reliable and resumable file uploads over HTTP.
Published: 11. June 2019 • Updated: 19. March 2026 • java, spring, javascript, ionic, capacitor
How to take pictures with the Capacitor camera plugin and upload them to a Spring Boot application with Angular's HttpClient and tus.io.
Published: 7. August 2019 • Updated: 20. March 2026 • java, spring
How to rate limit Spring MVC HTTP endpoints with bucket4j
Published: 25. August 2019 • Updated: 20. March 2026 • javascript, java, spring, ionic
In this blog post, we build a passwordless sign-in flow with WebAuthn, an Ionic / Angular front end, and a Spring Boot back end secured with Spring Security.
Published: 3. April 2020 • Updated: 20. June 2021 • ionic, spring, javascript, capacitor, java
In this blog post, we take a closer look at how to receive push notifications with Capacitor and how to send them from a Spring Boot application.
Published: 4. May 2020 • Updated: 21. May 2021 • java, spring
A closer look at Spring Security's support for upgrading password hashes
Published: 29. January 2025 • java, spring, llm
A look at Spring AI's support for Tool/Function calling. How to write your own tools and integrate them into your Spring AI application.
Published: 16. July 2025 • java, spring
How to use ShedLock to prevent concurrent execution of scheduled methods in a Spring Boot application.
Published: 23. July 2025 • spring, llm
Implementing a traditional RAG (Retrieval Augmented Generation) system using Spring AI.
Published: 28. July 2025 • java, spring
This post takes a look at the caching support in Spring Boot, including setup, pitfalls, key generation, and advanced configuration options.
Published: 13. August 2025 • java, spring
Implementing Mutual TLS (mTLS) with Spring Boot and Spring Security for secure client-server communication.
Published: 6. March 2026 • java, spring
Spring Expression Language (SpEL) is an expression language from the Spring ecosystem that can be used in any Java application. In this article, we will explore the features of SpEL and how to use it as a base for a simple rule engine.
Published: 6. March 2026 • java, spring
Learn how to integrate gRPC into a Spring Boot application using the Spring gRPC project.
Published: 16. April 2026 • java, spring
In this blog post, we are going to look at a complete BFF (Backend-for-Frontend) implementation with Spring Security that uses the OAuth 2.0 authorization code flow with PKCE to log users in, maintain a server-side session, and serve protected data.
Published: 7. April 2026 • spring
Spring Framework 7 adds two resilience features directly to the core framework: retry and concurrency throttling. In this blog post, we will explore both features.