Tech Blogs - Tutorials Dojo

Automating Publications with Claude, Canva, and n8n
Every business that runs a social media page knows the same repetitive cycle. Pick a topic. Write a caption. Design a graphic. Post it on schedule. Repeat tomorrow. Multiply that by every campaign, every seasonal push, every recurring content series, and it becomes a real operational cost, not just [...]
AI Ethics Explained: How to Use Artificial Intelligence Responsibly
Have you ever used ChatGPT to help explain a difficult topic? Maybe you've asked Gemini to summarize a lengthy article, generate ideas for a school project, write an email, or even use Claude for brainstorming concepts. If you're a student, you've probably wondered: "Is it okay to use AI [...]
Fine-tuning an LLM for natural Tagalog speech
If you're an ML engineer or a technical lead planning to pre-train a large language model (LLM) for Tagalog or Taglish, how do you start? In this article, we walk through the process of defining a target voice, building a data pipeline, running a QLoRA training experiment, and evaluating [...]
Building Diffender: A Serverless AI Security Reviewer for GitHub Pull Requests with Amazon Bedrock
A pull request can pass its tests, satisfy its acceptance criteria, and still expose a production credential in one line of code. Diffender is an Amazon Bedrock pull request reviewer built to identify that kind of risk before the change reaches the main branch. However, human review remains essential, [...]
AWS Certification Maintenance: Recertify Without an Exam
Many AWS-certified professionals face the same challenge every few years: preparing for another certification exam while balancing work, projects, and personal commitments. While certifications remain a valuable way to validate cloud expertise, the traditional recertification process can be time-consuming and stressful. To address this, AWS has introduced a new [...]
CCDV-F Claude Certified Developer Foundations Study Guide
Bookmarks CCDV-F Exam Domains CCDV-F Study Materials Claude Features to Focus On Key Exam Topics by Domain Important Skills Validate Your Readiness Final Remarks The Claude Certified Developer – Foundations (CCDV-F) certification is designed for technical professionals who build, [...]
CCAR-P Claude Certified Architect Professional Study Guide
Bookmarks CCAR-P Exam Domains CCAR-P Study Materials Claude Features to Focus On Key Exam Topics by Domain Important Skills Validate Your Readiness Final Remarks The Claude Certified Architect – Professional (CCAR-P) certification is designed for experienced professionals who build [...]
CCAO-F Claude Certified Associate Foundations Study Guide
Bookmarks CCAO-F Exam Domains CCAO-F Study Materials Claude Features to Focus On Key Exam Topics by Domain Important Skills Validate Your Readiness Final Remarks The Claude Certified Associate – Foundations (CCAO-F) certification is designed for professionals who use Claude [...]
CI/CD Crash Course: From Junior to Senior Developer
Continuous Integration and Continuous Delivery/Deployment (CI/CD) is the backbone of modern software teams. It's not just a buzzword for your resume — it's the automated pipeline that takes code from "it works on my machine" to "it works in production, reliably, every time." Understanding CI/CD deeply, not just using [...]
Everything You Need to Know About Harness Engineering
AI agents can now write code, browse the web, and run for hours without a human watching. Ask one to build a feature, and it might open ten files and call five tools. It can make a hundred small decisions before it ever shows you a result. That is [...]

How to View your Actual AWS Bill if you have AWS Credits

Having AWS Credits can significantly reduce the cost of your cloud resources in your AWS account. However, there are some changes in your AWS Billing and Cost Management console that you must be aware of, to ensure that you still understand the running cost of your cloud services. You can easily view the actual bill of your Amazon Web Services (AWS) account on the Bills page by default, which you can access via the [...]

My AWS Certified Solutions Architect Professional SAP-C02 Exam Experience

I just passed the latest version of the AWS Certified Solutions Architect Professional SAP-C02! What a way to end the year strong! In this short article, I'll quickly discuss what this SAP-C02 exam is all about and the different things that can help you pass this mind-boggling test. The New AWS Certified Solutions Architect Professional Exam The AWS Certified Solutions Architect - Professional SAP-C02) exam is one of the two Professional-level certification tests of [...]

My SAA-C03 AWS Certified Solutions Architect – Associate Exam Experience

My team and I took the recently released AWS Certified Solutions Architect - Associate SAA-C03 exam version recently. The SAA-C03 test replaced the old SAA-C02 exam version last August. If you can compare the official exam guide of the previous SAA-C02 version with the latest one (SAA-C03), you may notice that the exam domains are almost exactly the same but with quite different domain percentages. For example, the "Design Secure Applications and Architectures" domain [...]

What’s New with the SAP-C02 AWS Certified Solutions Architect Professional exam this 2023?

The AWS Training and Certification team recently announced the third iteration of its challenging AWS Certified Solutions Architect - Professional (SAP-C02) exam. The first day to take the new version of the AWS Certified Solutions Architect - Professional exam would be on November 15, 2022, with an updated exam code of SAP-C02. Take note that the current version (SAP-C01) will only be available on November 14, 2022 so you still have time to recertify. The [...]

Whitelisting Access to Application Load Balancer Through The Use of AWS WAF

Load balancing an application is a common approach to distributing traffic among multiple servers. It has a breadth of benefits that can optimize performance, including availability and responsiveness, as it spreads the workload from one server to another, preventing server overload. AWS has a wide variety of load balancer types. But one of the most commonly used for web servers is the Application Load Balancer (ALB), as it functions at the application layer, the [...]

Exploring AWS Cloud Quest: Cloud Practitioner Game

What is AWS Cloud Quest? AWS Cloud Quest is an open-world, role-playing game that teaches you how to create AWS solutions using cloud concepts and exercises based on real life. It helps you learn the intricacies of modern cloud technologies and have fun at the same time. Cloud Quest features 12 real-life scenario assignments which prepare and train you to become an AWS Cloud Practitioner at absolutely no cost. This free game targets audiences [...]

Building Dynamic Start and Stop Scheduler Functions for Non-Distributed Applications Under Auto-Scaling Group

In AWS, it’s of utmost importance to consider the cost in every aspect. In fact, cost optimization is one of the 6 pillars of a well-architected framework, therefore, it must be included in every step in building solutions in AWS. There are infinite ways to reduce bills but one of the most popular ones for EC2 instances is to start or stop them, especially if they don't need to run 24/7. But constantly doing [...]

Real-time Monitoring of 5XX Errors using AWS Lambda, CloudWatch Logs and Slack

Monitoring is the best friend of every system administrator. It gives visibility into what is happening on your application so that when an issue occurs, you or someone in your team could be alerted and do the necessary measures to mitigate it. However, this can only be as effective as the metrics you're keeping track of. There are plenty of factors that can affect application performance. And while it’s difficult to stay on top [...]

Automatically stop non-production RDS databases with AWS Lambda and Amazon EventBridge

Every AWS service offering comes with a pay-as-go pricing model, empowering businesses, small or large, to be flexible at experimenting and making changes as they build their products to market. This pricing model is similar to riding an Uber, where you only pay for the distance covered, or to electric bills where you’re charged based on actual energy consumption. Of course, the more devices you have running, the higher your monthly bill will be. [...]

What’s New with the SAA-C03 AWS Certified Solutions Architect Associate exam this 2022?

The AWS Training and Certification team recently announced that there’s yet another version release of its popular AWS Certified Solutions Architect Associate exam will be released this August 30, 2022. Its new exam version would be SAA-C03. Take note that the current version (SAA-C02) will only be available on August 29, 2022 so you still have time to recertify. The new SAA-C03 will be focused on Security, as shown on its official exam guide.' History of the [...]