Geek Logbook

Tech sea log book

Recent Posts

Categories

#50projectsIn50days Airflow Amazon Web Services Apache Iceberg AWS Azure bash bastion host Batch CAP Coders At Work Data data lakes Data Warehouse Docker Edsger W. Dijkstra Excel Git Hadoop HDFS Hellerstein Hive Javascript Networking NoSql Power Bi Powershell Python Redash S3 Social Skills Software Developer Spark Spark: The Definitive Guide SQL SSH terraform Testing The Elements of Programming Style Traversy Media Ubuntu Understanding Distributed Systems Virtual Box whale-alert Yaml

Archives

Category: Architectures

Google Bigtable vs. Amazon DynamoDB: Understanding the Differences

When choosing a NoSQL database for scalable, low-latency applications, two major options stand out: Google Cloud Bigtable and Amazon DynamoDB. While both are managed, highly available, and horizontally scalable, they are designed with different models and use cases in mind. 1. Data Model Google Bigtable: Amazon DynamoDB: 2. Query Capabilities Bigtable: DynamoDB: 3. Scalability and
Read More

Designing a Semantic Layer for Athena + Power BI

Modern data architectures benefit from a clear separation of layers: Ingesta, Staging, and Semantic (Presentation). When using Amazon Athena as the query engine and Power BI as the visualization tool, this layered approach enables scalability, governance, and cost control. 1. Ingesta (Raw Layer) Purpose: Store data exactly as it arrives from source systems, preserving fidelity.
Read More

Versioning Terraform Resources to Meet CIS Security Standards

Infrastructure as Code (IaC) has become a foundational practice for modern DevOps and cloud-native teams. Terraform, as one of the most widely adopted IaC tools, enables infrastructure automation, consistency, and repeatability. However, when working in regulated environments or organizations with strict compliance requirements, it’s not enough to just automate. You must also govern and secure
Read More

Choosing Between DynamoDB and Cassandra for a Crypto Exchange

When designing the backend of a crypto exchange, selecting the right database architecture is crucial. Two common NoSQL databases often considered for this type of application are Amazon DynamoDB and Apache Cassandra. Both offer horizontal scalability and high availability, but they shine in different use cases. This post explores their differences using concrete examples from
Read More

How to Implement MVC in CodeIgniter to Clean Up Your Views

When building web applications, it’s easy to end up with PHP logic mixed directly into your HTML views, especially in smaller projects. However, this can lead to messy, hard-to-maintain code. The Model-View-Controller (MVC) pattern is a great solution to separate concerns and make your application cleaner and more maintainable. In this post, we’ll explore how
Read More

Why to choose a Data Lake?

There are some reason that will take you to choose to use a Data Lake as solution for your Data Operations. The most importants are: The common work of the databases is that the storage and the processing is tied together making less flexible to scale storage without processing. In the other hands, the data
Read More

Three ideas to consider to develop a microservice

In the post about: Is microservice architecture the silver bullet? we can find the explanation about why is not a good idea the microservice architecture to the following applications: We define low-latency activity as strategies that respond to market events in the millisecond environment, the hallmark of proprietary trading by high-frequency traders though it could
Read More

Difference between Framework and Libraries

Software Development has tricky words. Some Jargon that seems as unreachable when we are starting. Even though is not a game changer understand this difference is a nice to have and in one or two paragraph I’m going to point the ideas that give me some impression that what are the key points in the
Read More

Event Driven Architectures

In the Gartner Submit of 2006 Mani Chandy talked about the existence of a misconception of Event Driven Architecture (EDA). So, he proposed to talk about the understanding of EDA and its Return of Investment. So he can evaluate the true costs and benefits. In this talk an event was defined as:  “An event is
Read More