Kunal Varpe

@starbuxman Something which will help me in my day to day work using Spring AI and gemini model.

hello what're you building today?

@pcshipp Mac Mini + Monitor.

I’m stuck and can’t decide MacBook Air Mac mini + monitor Which would you pick?

Scaling with Spring WebFlux ⚡ Most developers over-provision servers because their code blocks. Spring WebFlux solves this with a non-blocking event loop. Handle 10x the traffic on the same hardware by switching your stack. Stop wasting compute on idle threads.

Modernizing Spring API Calls 🚀 Stop using RestTemplate for new Spring projects. The RestClient provides a fluent API that's cleaner and easier to maintain. It brings the best parts of WebClient to synchronous code without the reactive overhead. Less boilerplate, better DX

@kaaaash____ Learning from your data

Be honest…. What’s ONE thing Windows does better than a MacBook?

🛠️ To get the most out of Spring Boot 4, start moving away from heavy reflection-based configs. Functional bean registration is the secret to minimizing your memory footprint: Less magic, more speed. #Java #CodingTips

🛑 You probably don’t need WebFlux anymore. With Spring Boot 4 and Virtual Threads, the complexity of reactive programming is becoming technical debt. Write simple, blocking code and let the JVM handle the scaling. Simplicity is the new performance. #Backend #SoftwareEngineering

🍃 Spring Boot 4 is finally ending the "Java is slow" debate. By making Project Leyden and native images the default, we’re seeing sub-100ms startup times. It’s no longer just a heavyweight enterprise tool. It’s a serverless powerhouse. #SpringBoot #Java

🧵 Virtual threads won't make your slow code faster. If your logic is CPU-bound, switching from platform threads is a waste of time. They solve for high concurrency and blocking I/O, not raw execution speed. Stop refactoring just because it's the new shiny thing. #Java #VT

💡 Stop using ThreadLocal with virtual threads. When you spin up millions of threads, the memory overhead will wreck your heap. Switch to ScopedValues instead. It's the lightweight way to share data without the legacy baggage. #Java #SoftwareEngineering

🚀 You can finally ditch reactive programming complexity. Virtual threads let you write simple, synchronous code that scales like crazy. No more callback hell or nested streams. #Java #Coding

@Gaurav_7887 Couple of local are much better than mentioned rival

Don’t Go local, Go for Quality 👌🏻 Jio ❌ Airtel ✅ BHIM UPI ❌ Google Pay ✅ Indus by Sarvam ❌ ChatGPT ✅ Arattai ❌ WhatsApp ✅ Zoho Mail ❌ Gmail ✅ Lapinoz ❌ Dominos ✅ Mahindra ❌ Mercedes ✅ Titan ❌ Rolex ✅ Voltas AC ❌ Daikin AC ✅ Kin … See more

🍃Spring Boot: Exposing all Actuator endpoints is a massive security risk. For a safer setup, only expose the essentials in your properties file: management.endpoints.web.exposure.include=health,info Keep heap dumps and env vars behind a firewall or disabled entirely.

🍃Spring Boot: Your '/health' endpoint is lying to you. A "UP" status that only checks if the JVM is running is useless. If your database or downstream service is down but Actuator still returns a 200 OK, your monitoring is a liability, not an asset. #backend #microservices

🍃Spring Boot: Stop adding Spring Boot Actuator only when you’re ready for production. Include it on day one. Seeing your bean wiring and property sources during local development saves hours of debugging. Visibility shouldn't be a "production-only" feature. #springboot #java

@piotr_minkowski But this is great for getting started

AI code generation tests – continued. With the prompt below, Claude Sonnet: 🔹Generated 6 microservices, ~85 Java classes, ~3.7k lines of code, ~20 REST endpoints 🔹Choose microservices over a single app 🔹Code didn't compile, but the party was great:) 🔹github.com/piomin/ai-gene…

@Priyankaji1998 At least he talking about the issues from where he is. If someone in India is trying to talk about it, every body knows what happened with them.🤫

🍃 @SpringFramework 6.2.16 and 7.0.4 are now available and come with lots of bug fixes and performance enhancements. Get 'em while they're hot! 🤓 spring.io/blog/2026/02/1…

Prompt caching in Spring AI can seriously cut your Claude API bill. Here's how it works and how to set it up. youtu.be/eYb7BKW4QcU

@piyascode9 Gemini

Google Gemini is the smartest AI right now. But 90% of people prompt it like ChatGPT. That's why I made the Gemini Mastery Guide: → How Gemini thinks differently → Prompts built for Gemini → 2000+ AI Prompts Comment "Gemini" and I'll DM it free.