Serverless Guy | ~Zero Cost Solutions

@elgermerlo Cant agree more. You are doing everything, assuming everything is Perfect. No update, no analysis. only you and the emptiness.

Why founder loneliness is your biggest obstacle (and how to fix it) 🧵

Build in Public Built a multi-tenant RBAC system this month. Closure table hierarchy for permissions. Complex to design, clean to query. The hard problems are the most satisfying to ship. 💪 #BuildInPublic #SoftwareEngineering

#MongoDB Stop running multiple queries when one aggregation pipeline does it all. $match → $group → $project in one round trip. Less network overhead. Less code. Faster results. MongoDB aggregation pipelines are one of its most powerful features. Use them. #MongoDB #Backend

But remember: consumers can't exceed partition count. Plan your partitions upfront. #Kafka #BackendDevelopment 2/2

#Kafka Kafka consumer groups are how you scale. One topic. Multiple consumers in a group. Each partition assigned to one consumer. Add consumers = add parallelism. Simple as that. 1/2

@cinamarina Hey

If you’re building in tech 🫶 Say hi 👋 let’s connect.

Just Shipped a serverless pipeline this week: Lambda → SQS → DynamoDB. Clean, scalable, zero servers to manage. Small win. Consistent shipping beats perfect planning. 🚀 #AWS #Lambda #SQS #DynamoDB

#Bedrock Building RAG? Don't build your own vector pipeline from scratch. AWS Bedrock Knowledge Bases handles chunking, embedding, and retrieval for you. Connect S3. Point at your docs. Done. You focus on the product. AWS handles the pipeline. #AWS #AI

@superscribeio Exactly. Clear records prevent arguments.

@KamranMoazim freelance fights rarely start at the contract. they start when the invoice arrives and nobody kept the receipts

#Freelance Write everything down. Scope. Deadlines. Deliverables. Edge cases. Verbal agreements don't exist in freelancing. If it's not in the contract, it didn't happen - and you'll be the one eating the cost. Protect yourself from the start. #Freelancing

Composable. If you're not using Depends() everywhere, you're writing messier code than you need to. #FastAPI #Python 2/2

#FastAPI FastAPI's Depends() is underused. Most devs use it for auth. That's it. But it's for anything: DB sessions, feature flags, rate limiters, request context. Clean. Testable. 1/2

Another successful AWS serverless project! 🚀 Grateful for clients who value clean communication and quality work. Reviews like this make the late nights worth it. Always open to new AWS/SaaS/AI challenges. Let's build something amazing! 💪 #AWS #Serverless #GenAi @Upwork

@itsaaroshi 🐞🐞🐞

I'm a vibe coder, scare me with one word.

AWS Lambda cold starts killing your response times? Provisioned concurrency is your fix. It keeps instances warm and ready. No init delay on critical paths. Don't apply it everywhere — it costs money. Apply it where latency actually matters. #AWS #Serverless

AIPrompt engineering is a real skill. Treat it like one. Most devs write one prompt, get a bad output, blame the model. The model is fine. Prompt is the problem. Be specific. Give examples. Define the format. Output quality = prompt quality. Invest in it. #AI #LLM

@Gavel_on_X hey!

I always follow tech guys who comment on my posts Always a pleasure meeting new people on X 🤜🤛

The wrong ones will push back — and that tells you everything. #Freelancing #SoftwareDevelopment 2/2

Always get 50% upfront. Not because clients are bad. Because scope shifts, priorities change, and your time is real. No deposit = no start. Non-negotiable. The right clients won't blink. 1/2

@transactional Get this wrong and you get silent data bugs at scale. Understand propagation deeply. It matters. #SpringBoot #Java 2/2

@Transactional propagation levels are one of those things most Spring Boot devs never fully understand. REQUIRED joins an existing transaction or creates one. REQUIRES_NEW always starts fresh — even rolls back independently. NESTED creates a savepoint inside the current one. 1/2