Modern data architectures utilize real-time data capture, transformation, movement, and loading solutions to build data lakes, analytical warehouses, and big data repositories. It enables the analysis of data from various sources without impacting the operations that use them. To achieve this, establishing a continuous, scalable, elastic, and robust data flow is essential. The most prevalent method for that is through the CDC (Change Data Capture) technique. CDC monitors for small data set production, automatically captures this data, and delivers it to one or more recipients, including analytical data repositories. The major benefit is the elimination of the D+1 delay in analysis, as data is detected at the source as soon as it is produced, and later is replicated to the destination.

This article will demonstrate the two most common data sources for CDC scenarios, both as a source and a destination. For the data source (origin), we will explore the CDC in SQL databases and CSV files. For the data destination, we will use a columnar database (a typical high-performance analytical database scenario) and a Kafka topic (a standard approach for streaming data to the cloud and/or to multiple real-time data consumers).

Overview

This article will provide a sample for the following interoperability scenario:

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In my previous article, I structured network communications
in these 3 possible layers, and covered the last

  • Client <---> Transport
  • Server <---> Transport
  • Client <---> Server

In fact, you have the most control over the last one.
The IRIS side as a server is yours and under your full control.
Up to now, the Transport layer was assumed to be as passive as a bare wire.

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Over the past several years, the InterSystems Developer Community has accumulated more than 1,000 open-source projects. Many of them serve as examples and learning materials — but a significant number have become useful tools, libraries, integrations, and real-world components used in production.

Some of these projects are mine, and like many community developers, I’ve seen the same recurring problem:

  • It’s easy to create an open-source project.
  • It’s hard to maintain, support, and develop it sustainably — especially without funding.

Writing code is one thing.
Supporting it for years, keeping up with new IRIS versions, building CI pipelines, writing documentation, fixing issues, reviewing PRs — all of this demands both time and motivation, and the biggest motivator is often financial support.

This is not a new challenge.
The global open-source world has faced this for decades and has developed various models to support OSS ecosystems.

I believe it’s time for the InterSystems community to start a discussion about adopting a similar model.

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Hey Community!

We're happy to share a new video from our InterSystems Developers YouTube:

Foreign Tables In 2025.2 @ Ready 2025

https://www.youtube.com/embed/pIMa7lqWiHc
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<--break->

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Question
· Nov 13
Business Services limit

Hi guys,

Is it bad to have too many Business Services in a production and what's the limit, I'm looking to convert our system tasks (around 30 of them) into Business Services and wondering if it's a better option?

Thanks

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Hi, Community!

Are you looking for ways to strengthen your InterSystems IRIS® data platform deployment? See how mirroring can help:

Architecting for Success with Mirroring

https://www.youtube.com/embed/cTU39llndGA?utm_source=youtube&utm_medium=social&utm_campaign=cTU39llndGA
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Hey Community,

Enjoy the new video on InterSystems Developers YouTube:

Using SerenityGPT to Build Out an Application GenAI Middleware at InterSystems @ Ready 2025

https://www.youtube.com/embed/ZXULSWMmOD0
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Overview

This release introduces the FHIR Server 2025.10.0, delivering the latest standards compliance and performance improvements. It also enhances the Health Connect Cloud (HCC)upgrade process for greater reliability and adds new flexibility to Network Connect through prefix list support in VPN configurations.


New Features and Enhancements

Category

Feature / Improvement

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Hey Community,

Enjoy the new video on InterSystems Developers YouTube:

Operations & Scalability with InterSystems IRIS - From Zero to Hero @ Ready 2025

https://www.youtube.com/embed/SDj8Ge59uJo
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Hello!

I'm trying to create some foreign tables to a PostgreSQL database. In some cases, columns with certain datatypes cannot be consumed by IRIS and the following error is thrown:

[SQLCODE: <-237>:<Schema import for foreign table did not return column metadata>]

[%msg: <Unkown data type returned by external database>]

For example: serial4 typed ID columns are typical examples. Is it possible, what's the best way of resolving these datatypes, which- seemingly- don't have proper JDBC metadata mappings?

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As a developer who uses Cache as DB for a couple of projects, I'm using REST API's every time, knowing how to consume a resource from REST API, in my opinion, it's crucial to know how to consume external REST Api's using %Net.HttpRequest because it enables integration with modern web applications and services, and it's a crucial skill for a backend developer who loves and uses Cache as a DB.

What and who is %Net.HttpRequest

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When I started my journey with InterSystems IRIS, especially in Interoperability, one of the initial and common questions I had was: how can I run something on an interval or schedule? In this topic, I want to share two simple classes that address this issue. I'm surprised that some similar classes are not located somewhere in EnsLib. Or maybe I didn't search well? Anyway, this topic is not meant to be complex work, just a couple of snippets for beginners.

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Hey Community!

We're happy to share a new video from our InterSystems Developers YouTube:

Document Server: Improving Performance While Reducing Stored Data @ Ready 2025

https://www.youtube.com/embed/JqCIXcvVxWc
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Window functions in InterSystems IRIS let you perform powerful analytics — like running totals, rankings, and moving averages — directly in SQL.
They operate over a "window" of rows related to the current row, without collapsing results like GROUP BY.
This means you can write cleaner, faster, and more maintainable queries — no loops, no joins, no temp tables.

In this article let's understand the mechanics of window functions by addressing some common data analisys tasks.

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InterSystems FAQ rubric

When exporting using the Export() method of the %Library.Global class, if the export format (fourth argument: OutputFormat) is set to 7, "Block format/Caché block format (%GOF)," mapped globals cannot be exported (only globals in the default global database of the namespace are exported). To export mapped globals in "Block format/Caché block format (%GOF)," specify the database directory to which you want to map them in the first parameter of %Library.Global.Export().

An example of execution is shown below.

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InterSystems IRIS Adaptive Analytics version 2025.4.1 is now available from the InterSystems Software Distribution page. This release includes AtScale 2025.4.1 and is compatible with the existing Adaptive Analytics User-Defined Aggregate Function (UDAF) file - 2024.1. New features included in AtSCale's 2025 releases include:

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Over time, while I was working with Interoperability on the IRIS Data Platform, I developed rules for organizing a project code into packages and classes. That is what is called a Naming Convention, usually. In this topic, I want to organize and share these rules. I hope it can be helpful for somebody.

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Only method/routine executed as "do Method..." is included into $ESTACK.
How can I modify a method or routine that returns a value so it can be included in $ESTACK?
Example upon executing via Studio Debug ($ESTACK is converted to string with ">" delimiter):
Expected: stackstr = %Debugger.System.DebugStub > LogGenerate > Entry > DirChain > Attributes > LogNew > LogSize > LogFormat > LogWrite
Processes DirChain, LogNew, LogSize, LogFormat are executed as "If Method..."

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Hey Community,

Enjoy the new video on InterSystems Developers YouTube:

Analytics and AI with InterSystems IRIS - From Zero to Hero @ Ready 2025

https://www.youtube.com/embed/-oswnejrNSA?si=4vC-wkrPaoZIm-1i
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