Tech with Mahdi

10/19/2025

The AI job market is shifting fast. Companies aren't hiring "AI engineers" to build separate AI products. They're expecting existing developers to ship AI-enhanced features within current applications. That means you need to understand both traditional software engineering and generative AI-specific challenges.
AWS just announced the Generative AI Developer - Professional certification (beta opens November 18).
What's different: It focuses on production challenges tutorials don't cover—prompt security, RAG architecture, model deployment, and cost optimization.
I broke down what makes this cert different, who should take the beta, and how to prepare 👉 https://techwithmahdi.com/aws-certified-generative-ai-developer-professional/

AWS launches the AWS Certified Generative AI Developer Professional Certification (beta Nov 18). Focuses on production challenges: RAG, prompt security, cost optimization & deployment.

10/05/2025

A developer woke up to an email: "Your AWS bill: $78,000." He usually paid $200.
I researched cloud billing disasters and found this wasn't unique. Infinite loops costing $10K in 48 hours. Forgotten databases hitting $61K. Leaked credentials causing $45K mining bills. One startup paying $80K monthly for what costs $5K on bare metal.
Cloud promises "pay what you use." But without proper setup, you can scale to unaffordable costs. Cloud provider won't stop you.
These horror stories from across the web show a pattern: most disasters could have been prevented with simple billing alerts and spending limits.
Read more stories: https://techwithmahdi.com/aws-billing-nightmares-real-stories/
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Discover real AWS billing nightmares from $10K to millions. Learn from these cloud disasters and how to avoid catastrophic bills with proper configuration.

05/23/2025

If you’re an AWS Certified Cloud Practitioner and your certification is about to expire, you can now renew it for free — no exam required and it's 100% free.

AWS has launched the Cloud Quest: Recertify Cloud Practitioner course. By completing a series of assignments in this hands-on learning experience, you’ll renew your certification and earn a digital badge to showcase your updated skills.

Details here:

https://explore.skillbuilder.aws/learn/courses/17623/aws-cloud-quest-recertify-cloud-practitioner

02/15/2025

🔹 Many developers take pride in mastering complex concepts, but true expertise isn’t just about knowing—it’s about explaining.

🔹 Vulgarization in software development isn’t about oversimplifying; it’s about making ideas accessible. Whether it’s to a colleague, a manager, or a client, the ability to break down complexity without losing meaning is a game-changer.

⚡ Why does it matter?
✅ Better collaboration across teams
✅ Faster decision-making with clear insights
✅ Stronger teams that understand the bigger picture

🧠 Technical skills matter, but the ability to make others understand is what sets great developers apart.

09/01/2024

🔒 Having trouble with SSL certificate validation in Java? Check out this step-by-step guide on how to disable SSL certificate validation safely for testing purposes. Perfect for developers working in controlled environments, but remember—never use this in production! Learn how to create a custom TrustManager, set up an SSLContext, and much more.

How to disable SSL certificate validation in Java

11/11/2022

Hosting a few websites on AWS, prefer Amazon LightSail over EC2, it's cheaper and you get more capacity !

05/19/2022

True story 😅😅

04/21/2022

Interested in Java ? this LinkedIn group may interest you, join us and share your content.
https://www.linkedin.com/groups/8666950/

04/13/2022

Are you on LinkedIn ? Join us and Receive updates on tutoref's LinkedIn page https://www.linkedin.com/company/tutoref .
We share interesting programming tutorials.

tutoref.com | Online Software Tutorials | Software development tutorials and Code Examples Java.

03/26/2022

Do you know other Unit Testing Best Practices ? Leave a comment
https://tutoref.com/unit-testing-best-practices/

12/14/2021

Did you hear about the Zero Day vulnerability ? Here is a description of the vulnerability ℹ️ and how to mitigate it 🚧.
https://tutoref.com/cve-2021-44228-zero-day-vulnerability/