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PostgreSQL

Solution design for banking system migration

When it comes to complex database migrations, especially for mission-critical systems in the financial sector, cutting corners in the early stages can turn into an expensive gamble. Yet, we often encounter organizations that view the discovery and solution design phase as an optional step — one they can skip or downsize to save time or […]
Oleksii Svitlychnyi

Performance upgrades in PostgreSQL 17

PostgreSQL continues to be the database of choice for applications demanding high performance, reliability, and scalability. The release of PostgreSQL 17 further reinforces these capabilities, bringing a series of targeted performance enhancements that directly address common pain points — reducing memory usage, optimizing complex queries, and accelerating data scanning.  In this post, we’ll dive into […]
Oleksandr Polyvanyi

JSON upgrades in PostgreSQL 17

PostgreSQL 17 significantly expands its JSON support, empowering developers to work effortlessly with semi-structured data directly within SQL. In this article, you’ll discover how the new JSON_TABLE() function and extended JSON Path capabilities simplify data extraction, transformation, and filtering, making JSON in PostgreSQL feel like a first-class relational citizen.  Whether you’re dealing with deeply nested […]
Oleksandr Polyvanyi

Incremental backups in PostgreSQL 17

Effective database backups are crucial for protecting data integrity and ensuring swift recovery. PostgreSQL 17 introduces a significant upgrade in the form of incremental backups, providing a faster, storage-efficient alternative to traditional full backups.  In this article, you’ll not only learn how incremental backups work in PostgreSQL 17 but also discover why they may completely […]
Oleksandr Polyvanyi

Modernizing the Oracle ODS Data Warehouse for SaaS flexibility with PostgreSQL on AWS

Imagine trying to keep up with the evolving needs of higher education institutions while ensuring your systems are cost-effective and scalable. This was the challenge faced by our client, a company providing a suite of software solutions for educational institutions. They needed to modernize one of their core components—an Operational Data Storage (ODS) system, which […]
Oleksii Savchenko (DB Developer), Oleksii Svitlychnyi (Technical writer)

Database migration with AWS SCT: Solutions for typical conversion issues

Migrating Oracle databases to PostgreSQL or MySQL with AWS Schema Conversion Tool (AWS SCT) can present a range of challenges, from unsupported data types to limitations in automated code conversion and potential performance issues. AWS SCT offers powerful capabilities to automate these migrations, but it may not always deliver optimal results or handle complex Oracle […]
Oleksii Svitlychnyi

Handling null and empty string differences in Oracle and PostgreSQL

When migrating from Oracle to PostgreSQL, one of the most important differences to consider is the treatment of null and empty string values. In Oracle, null and empty string are treated as the same entity, but in PostgreSQL, they are distinct. Failing to account for this distinction during migration can lead to logical errors and […]
Oleksii Savchenko

Handling PostgreSQL Routines with More Than 100 Arguments

When working with PostgreSQL, database developers may encounter a limitation when attempting to create routines with more than 100 arguments. PostgreSQL enforces this restriction by setting FUNC_MAX_ARGS to 100 during the server build. Although this limitation is rarely an issue, complex procedures, particularly those migrated from Oracle, may have a significantly higher number of arguments. […]
Oleksii Savchenko

How to Optimize Oracle-to-PostgreSQL Migrations Using AWS SCT Extension Pack

The AWS SCT Extension Pack is designed to emulate Oracle’s system functions, procedures, and other database objects within PostgreSQL. This emulation is achieved by creating a special schema in PostgreSQL, named aws_oracle_ext, where these functions and objects are stored. This pack simplifies migration by replacing Oracle-specific calls with their PostgreSQL equivalents, ensuring that the code […]
Oleksii Savchenko

Natural Language Interface for Data Platform

Imagine a business analyst whose task is to extract necessary information from a data warehouse to generate various reports. They need to be proficient in crafting SQL queries of any complexity—a challenging and time-consuming feat that requires deep understanding of database structures and SQL language. But what if this business analyst had an AI assistant […]
Maksym Kurhanetskyi, Oleksii Svitlychnyi

AI Text Classification and Matching for Better Decisions

Picture this: You have an AI-powered assistant that helps manage your team’s growth. It works with three types of text data: job descriptions, employee skills, and training programs. You give it a job description and an employee’s skill set, and it pinpoints the perfect training programs to bridge any skill gaps. It’s like having a […]
Maksym Kurhanetskyi, Oleksii Svitlychnyi

Deployment of AI-Powered Chatbot

This blog post focuses on the architecture and deployment of the AI-powered Chatbot solution that we described in our earlier blog post Custom AI Chatbot Development Using RAG. This solution is built for the AWS cloud but uses OpenAI as an LLM. We’ll dive deep into the CI/CD process and AWS deployment architecture of the […]
Kostiantyn Odynets, Oleksii Svitlychnyi

Custom AI Chatbot Development Using RAG

You have probably seen and heard about AI-powered chatbots that can converse with the user about website content, or some piece of knowledge related to a company. The world is full of buzz on all things AI, with chatbots driving the headlines. In this article, we’ll share our experience building a full-blown solution from scratch […]
Maksym Kurhanetskyi, Oleksii Svitlychnyi

Over-the-Air Device Firmware Upgrade via Bluetooth

We’ve developed a mobile app and web admin panel that allow a specialized headphone manufacturer for Heavy Metal enthusiasts to swiftly and conveniently deliver firmware updates for their headphones over the air. These headphones do more than just play music; they’re designed to precisely render sound, enhanced by continually evolving custom firmware for each model. […]
Oleksii Svitlychnyi

Case Study: Fast and secure media content delivery with Amazon CloudFront and Lambda@Edge

This case study shows how ABCloudz engineering team resolved site performance issues using Amazon CloudFront and Lambda@Edge of AWS. Challenge Our partner iCleanse offers its clients the Swift UV devices, designed to disinfect hands and mobile phones. As the device disinfects a phone within 15 seconds, it simultaneously displays sponsored video content, generating advertising revenue. […]
Viacheslav Kim
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