Among the many voices that shape the InterSystems Developer Community, some stand out not only for their knowledge but for their consistency, curiosity, and passion. One of those voices belongs to @Dmitry Maslennikov, a long-time member whose experience spans nearly two decades and who continues to innovate and inspire developers around the globe.

🤩 Let's take a look at Dmitry’s deep-rooted journey with InterSystems and his lasting impact on our Community...

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Question
· Jun 24
Using %Net.WebSocket.Client

Hi Guys,

I'm trying to use %Net.WebSocket.Client to collect data from a sever,

and part of that I needed to implement Two classes (SX3.Production.HTTP.AdvCredenials & SX3.Production.HTTP.AdvListener) as below for the purpose of Credentials & EventListener properties,

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All,

At READY 2025 we will have a CCR User Group Breakfast for HealthShare and TrakCare customers on Wednesday at 7:30am (presentation starts at 7:45am). Topics will include:

  • Review of Self Service Best Practice Dashboard
  • Recent CCR New Features and Enhancements
  • Active CCR Feature Beta Programs
  • Summer and Fall Roadmap
  • Q&A

We will meet in the Jackson meeting room. Visit the Meeting Counter to have it added to your schedule or comment below to request an invite.

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Hi Community!

We have great news for those of you who are interested in what's happening at the InterSystems Ready 2025 but couldn't attend in person. All the keynotes are being streamed! Moreover, you can watch them afterwards if they happen at an inopportune time.

Keynotes from Day 1 are already ready 😉

https://www.youtube.com/embed/mbqKoXBB114
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Welcome everyone!

Hope to meet you here.

Let's have a dedicated discussion thread about Ready 2025. Please post your impressions! Ideas! Inspiration! Photos!

Keynotes are streamed live so even if you're not in Orlando, you can still join!

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I have a class with a projection that creates some persistent classes (chunks) and a non-persistent "Daemon" class that I want to have running in the background, doing some processing. The daemon needs to look at the "chunk" classes, and I want it to be simple to start the daemon -- I am currently calling the daemon's start method at the end of the CreateProjection method.

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Hello, good morning, thank you so much for reading this question. ☺️🙂👍

We are developing a code to get information about our Production's items: services, processes and operations.

We know we can get various configurations of a given item: Category, Port, Enabled...

But we wonder how we could get the date time of the last mesage (most recent) received in an item.

To give a code snippet a small section of the code we have developed (and tested), it looks like:

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Hi,

I'm trying to install NodeJs (javascript runtime environment) in IRIS container so I can execute JS files?
It was easy to install it outside the container but I got the attached error when trying in the container:

Thanks

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Hi all,

We're developing a medical appointment app that connects doctors' schedules to an appointment provider.

The provider is returning us the appointment in the following format:

Thu Jul 03 08:20:00 CEST 2025

It means, 03 july 2025 at 08:20:00 Central European Summer Time (UTC+2)

But we need the following format:

2025-07-03 08:20:00+02:00

Is there any option to convert zone time code (CEST) to a UTC+x ?

How to convert zone time code (CEST, CET, ET, EDT, etc..) in its zone time in UTC (UTC+2, UTC+1, UTC-5, etc..) ?

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Hi fellow developers!

Curious if you guys use CreatedAt and LastUpdated properties in your classes?

Created to stamp when the record was created and LastUpdated when it was last updated. Where it can be useful - almost everywhere )) I find it convenient in records sorting (e.g. by creation or last update), in sync (with other systems), and so on, for better analytics.

Do you use it all the time for all the classes?

If don't, why not? What do you use instead?

What property type do you use - %TimeStamp? %DateTime?

What is the best practice to have CreatedAt filled automatically during creation and LastUpdated on every successful save (guess it could be in %OnSave)?

Please share your experience /thoughts?

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Good day

I am trying to connect a business service to fileZilla using FTP on my local PC Win 11.

I am trying to setup my training after attending the Building HL7 interfaces course with ISC.

The connection is failing. He is the error below

ERROR <Ens>ErrOutConnectFailed: FTP Connect failed for localhost:21//SSL=' with error ERROR <Ens>ErrFTPConnectFailed: FTP: Failed to connect to server 'localhost:21//SSL='/' (msg='Missing required argument',code=501)

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Hey Community,

Enjoy the new video on InterSystems Developers YouTube:

⏯ SMART on FHIR: App Running

https://www.youtube.com/embed/3PBqQwOn7rs
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Hello,

I have a problem generating QR code in Caché now.

After executing the code

set Status=##Class(%SYS.QRCode).GenerateImage(P0,,.DataURI)

(variable P0 contains data for QR code)

an error is displayed now:

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Question
· Jun 19
Namespace vs database

I'm confused about the differences between a namespace and a database.

I understand that a database is a single IRIS.DATA file in a directory in the os hosting IRIS.

What is the difference between a namespace and a database?

Can I write data into a database without specifying a namespace?
If so how do I write to a particlar DB in objectscript?

Does a database have to be in a namespace?
Can a database be in more than one namespace?

Can a namespace have only one 'routine' database and only one 'data' database?

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This article describes a significant enhancement of how InterSystems IRIS deals with table statistics, a crucial element for IRIS SQL processing, in the 2025.2 release. We'll start with a brief refresher on what table statistics are, how they are used, and why we needed this enhancement. Then, we'll dive into the details of the new infrastructure for collecting and saving table statistics, after which we'll zoom in onto what the change means in practice for your applications. We'll end with a few additional notes on patterns enabled by the new model, and look forward to the follow-on phases of this initial delivery.

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I seem to remember making this work before, but I'm not having any luck digging up examples.

I've defined some custom properties for a business operation that could definitely benefit from having popup descriptions available in the Production Configuration. I have triple-slash comments before each property that do just that in the source. I thought those provided the text for the popup descriptions when clicking on the property name, but apparently not.

Any thoughts?

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Article
· Jun 18 2m read
Options for Python Devs + Poll!

I am writing this post primarily to gather an informal consensus on how developers are using Python in conjunction with IRIS, so please respond to the poll at the end of this article! In the body of the article, I'll give some background on each choice provided, as well as the advantages for each, but feel free to skim over it and just respond to the poll.

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I'm using a %Net.HttpRequest which had been successful in the past, but started failing at some point with a SSL/TLS protocol error.

ERROR #6085: Unable to write to socket with SSL/TLS configuration 'groundca', error reported 'SSL/TLS error in SSL_connect(), SSL_ERROR_SSL: protocol error, error:14077102:SSL routines:SSL23_GET_SERVER_HELLO:unsupported protocol'

The SSL/TLS configuration:

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Hey Community!

We're happy to share the next video in the "Code to Care" series on our InterSystems Developers YouTube:

⏯ Chaining LLMs for Better Results using Agentic AI

https://www.youtube.com/embed/hAtuAIihBVA
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My intention is to show how simple it is to generate a lookup table taking into account the information received in our HL7 messaging. The HL7 message lookup table provided by IRIS is certainly sufficient for most of the searches we want to perform, but we always have that special field in our HIS, LIS, RIS, etc. that we'd like to search by. But that's in a segment outside of that lookup table. That field forces us to generate a specific search using the expanded search criteria.

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