StackPilot

If you’re starting Spring Boot from scratch and wondering what to build first, this list is for you. I put together few Spring Boot project ideas from beginner to advanced so you can learn by building real-world apps. Start small, stay consistent, and level up one project at a time Which one are you planning to build first? 👇 #Java #SpringBoot #BackendDevelopment #Coding #Developers

@quantumaidev Small PRs + frequent rebases + feature flags 👀 That’s usually how we keep merge conflicts under control with multiple devs

Devs - how do you manage merge conflicts where you have many devs working on the same feature?

@SumitM_X If both methods use synchronized(this), then No 👀 Both threads are competing for the same object lock. So if Thread1 is inside method1(), Thread2 must wait before entering method2(). Exception: if they’re called on different object instances, then both can run in parallel

Say we have two threads, "Thread1" & "Thread2". If Thread1 is executing in method 1, can Thread2 then execute in method 2?

@PabloBablo123 @NoahKingJr 😂 My actual Plan A is already 'debug whatever the AI just confidently hallucinated' and Plan B is just crying in the standup meeting.

@TheStackPilot @NoahKingJr That is already plan A 😂

Software Engineers what's your plan B if AI replaces you?

@javarevisited No terminal operation 👀 Streams are lazy, so map() alone won’t run. You need something like collect() or forEach() to trigger it

Java Stream Interview ☕ What happens here? List<Integer> list = List.of(1,2,3); list.stream() .map(x -> x * 2); Why no output?

Ever had your Spring Boot app suddenly balloon in memory at scale, even though your code looked clean? The hidden culprit: improper cache key generation in @Cacheable when dealing with collections or user-specific data. One missing SpEL expression and you’re caching massive objects repeatedly. Fixed ours by tightening the key — heap usage dropped dramatically overnight. What’s the sneakiest memory issue you’ve debugged in Spring Boot lately? Reply below 👇 #SpringBoot #BackendDev

Method-level security is now even more powerful. With @PreAuthorize you can lock things down like “only admins with fresh MFA can call this” or “finance team only for this endpoint”. Zero-trust without turning your code into a mess. Security in Spring finally feels like it belongs in the app, not bolted on. What’s your biggest Spring Security win (or pain) this year? Reply below—I read every one 👀 Full Baeldung guide in comments 👇 baeldung.com/spring-securit… #Java #CyberSecurity #Spring

Brute-force and API abuse still keeping you up at night? Spring Security 7 makes rate limiting stupidly easy to enable—and actually effective. Set it once, get smart 429 responses, and sleep better knowing your endpoints have a built-in bouncer. No more “I’ll secure it later” regrets. One more practical tip in the last post… 👇

Be honest… are you still relying on just a password in 2026? 😅 I know I was—until Spring Security 7 dropped native MFA support. No more custom filters or third-party hacks.Just slap on @ EnableMultiFactorAuthentication, require password + OTT (or whatever factors you need), and Spring handles the rest intelligently. It even auto-redirects users to complete missing factors. Game changer. Who else is finally killing password-only logins? Drop a 🔥 if you’re in #SpringBoot #SpringSecurity

Classic dev life: Wife: “Honey! Can’t open the jar 😩” Me, from the other room, without even looking up from the code: “Download and install Java.” Every programmer’s brain is just wired differently 😂 #ProgrammingHumor #DeveloperLife #Java

Password alone in 2026? 😅 Come on, we all know that’s asking for trouble. Spring Security 7 just dropped proper built-in MFA support — and it’s actually clean and flexible. No more fighting with custom filters. Just annotate, require your factors (password + OTT, X509, whatever), and you’re done. Leveling up your app’s security has never been this straightforward. Full guide here 👇 baeldung.com/spring-securit… #SpringBoot #SpringSecurity #MFA #Java

@claudeai Finally! No more copy-pasting back and forth or fighting with formatting. This is actually going to save me hours every week. When is this coming to regular Pro users though? 😅

Claude for Word is now in beta. Draft, edit, and revise documents directly from the sidebar. Claude preserves your formatting, and edits appear as tracked changes. Available on Team and Enterprise plans.

@IndianTechGuide 10 years and UPI has completely changed how India pays! From chai tapri QR codes to instant transfers anywhere — this is the real digital revolution 🇮🇳🔥 What a journey!

🚨 ONE DECADE FOR UPI. 🇮🇳 NPCI introduced the UPI on April 11, 2016. 10 years later, UPI has over 500 million active users in India. - 504 Banks - 65 million merchants UPI has become the backbone of Indian payments.

Classic production-only issue 👀 If it fails only during peak traffic, first suspect scaling bottlenecks: - DB connection pool exhausted - auth service rate limits - Redis / session store saturation - thread pool starvation - load balancer timeouts - race conditions under concurrency Locally it works because traffic is low. Production exposes what concurrency hides

Login API works fine locally Fails in production Only during peak traffic What’s happening?

@Polymarket Anthropic out here trying to build their own chips so they don’t have to keep paying Nvidia’s ‘we own the AI world’ tax 😂 Next thing you know Claude’s gonna start dropping hardware reviews like ‘This tensor core slaps but the power bill is sus’

JUST IN: Anthropic reportedly considering designing its ‌own AI chips to reduce dependence on Nvidia.

Your microservices are gonna retry requests when things flake. Without idempotency keys, you’re silently creating duplicate orders, payments, or notifications. Nightmare fuel. Simple fix: client sends a unique key, your service checks Redis first. Saved my last project from chaos. Quick pattern: if (redis.hasKey(idempotencyKey)) return cachedResult; result = process(); redis.set(idempotencyKey, result, 24h); What’s the scariest duplicate bug you’ve debugged? Drop it 👇 #SystemDesign #BackendLife

Great pick 👏 Apart from Daily.dev, I usually check: - Hacker News → latest tech discussions - InfoQ → architecture / backend engineering - Baeldung → Java / Spring deep dives - GitHub Trending → what devs are building - Medium / Dev.to → practical engineering posts Always curious what others follow too 👀

If you’re a developer and want to stay updated I use daily dev daily. What other sites/blogs do you check regularly?

Simple way to remember 👀 Docker image = the blueprint A read-only template with app code, dependencies, and configs. Docker container = the running instance The live process created from that image. Think: image = class container = object One defines it. The other runs it 👀

Interviewer: What is the difference between a Docker image and a Docker container?