InterSystems Developer Community is a community of 18,069 amazing developers
We're a place where InterSystems IRIS programmers learn and share, stay up-to-date, grow together and have fun!

InterSystems is pleased to announce a new Developer Download site providing full kit versions of InterSystems IRIS Community Edition and InterSystems IRIS for Health Community Edition. These are available free of charge for application development use.

You can download directly from the InterSystems Developer Community by selecting Download InterSystems IRIS.

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The %Net.SSH.Session class lets you connect to servers using SSH. It's most commonly used with SFTP, especially in the FTP inbound and outbound adaptors.

In this article, I'm going to give a quick example of how to connect to an SSH server using the class, describe your options for authenticating, and how to debug when things go wrong.

Here's an example of making the connection:

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Hi Developers!

InterSystems Developers Community today unites more than 7,000 developers from all over the world. Since 2016, our community has been growing and improving for you, our dear developers!

Together we've done a lot over these years, and much more is planned for the future!

So, who makes our community better every day? Who tries for all of us and improves the space for developers?

Let's warmly greet our team:

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Hi Community!

We're pleased to announce that that InterSystems IRIS Community Edition is available on the Docker Store! InterSystems IRIS Community Edition is the no-cost developer edition designed to lower the barriers to entry to get started with IRIS. Now that it is listed on the Docker Store, running an IRIS Community instance is as easy as -

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Hi all, it's finally time for the next release of VSCode ObjectScript extension. So what's new in this release.

  • Debugging support, for classes, routines and attach to a running process
  • Files in Server Explorer now can be edited

  • Added more details about connection errors

  • Improvements in Server Explorer build tree

  • Fixed memory leak when exporting large amount of files
  • Server view can be opened in explorer as virtual file system with schema `isfs://`
  • Option to suppress popup information message about successful compile, ("objectscript.suppressCompileMessages": true)
  • Export, addCategory setting have more flexibility in naming category for exported items
  • Formatting for commands and functions, as Word, UPPER or lower
  • Some improvements in syntax highlighting
  • Some other small fixes

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Article
· Apr 1, 2019 3m read
Closures in ObjectScript

After many sleepless nights it's a pleasure to announce the newer, better, moderner ObjectScript compiler which implemented pretty much everything you ever wanted to have in modern ObjectScript:

  • Design objective of this new compiler is to parse reasonable subset of current ObjectScript syntax which will look readable for stranger, and not scare them with 1 letter syntax. The good start for compiler was the old-good COS Guidelines from here https://github.com/intersystems-ru/cos-guidelines
  • For reasons we mentioned above we do not parse 1 letter syntax. It's declared evil;
  • We do not handle dotted syntax for the same reason - modern syntax with {} is proper replacement for dotted syntax blocks;

But we not only parse the modern ObjectScript syntax, we have implemented finally the long-standing request which we always dreamed about. Closures!

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In an ever-changing world, companies must innovate to stay competitive. This ensures that they’ll make decisions with agility and safety, aiming for future results with greater accuracy.
Business Intelligence (BI) tools help companies make intelligent decisions instead of relying on trial and error. These intelligent decisions can make the difference between success and failure in the marketplace.
Microsoft Power BI is one of the industry’s leading business intelligence tools. With just a few clicks, Power BI makes it easy for managers and analysts to explore a company’s data. This is important because when data is easy to access and visualize, it’s much more like it’ll be used to make business decisions.


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Hi Everyone,

New Coding Talk, recorded by @Evgeny Shvarov, is already on InterSystems Developers YouTube:

GitHub Repository Template To Develop and Debug ObjectScript in InterSystems IRIS

https://www.youtube.com/embed/PumOI3q5Gdk
[This is an embedded link, but you cannot view embedded content directly on the site because you have declined the cookies necessary to access it. To view embedded content, you would need to accept all cookies in your Cookies Settings]

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Article
· Mar 19, 2019 9m read
A Tutorial On WebSockets

Intro

Most server-client communication on the web is based on a request and response structure. The client sends a request to the server and the server responds to this request. The WebSocket protocol provides a two-way channel of communication between a server and client, allowing servers to send messages to clients without first receiving a request. For more information on the WebSocket protocol and its implementation in InterSystems IRIS, see the links below.

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Hi all, I have released the latest version of VSCode extension for ObjectScript already a month ago, and finally a time for the info about this new release.

So, what's new in the release:

What's new in this version

  • added export setting "objectscript.export.addCategory" if enabled uses the previous behaviour, adds category folder to export folder, disabled by default
  • added Server actions menu, by clicking on server info from status bar. Open Management portal, Class Reference and toggle connection.
  • Class Suggestion in ##class, Extends, As, CompileAfter, DependsOn, PropertyClass
  • $SYSTEM suggestion by Classes from %SYSTEM
  • Import and compile folder or file by context menu in File Explorer
  • Server Explorer, now possible to open any other namespace
  • Macros suggestion

For details how it works now, look further.

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Article
· Feb 25, 2019 4m read
Using Grafana directly from IRIS

There have been some very helpful articles in the community that show how to use Grafana with IRIS (or Cache/Ensemble) by using an intermediate database.

But I wanted to get at IRIS structures directly. In particular, i wanted to access the Cache History monitor data that is accessible by SQL as described here

https://community.intersystems.com/post/apm-using-cach%C3%A9-history-mon...

and didn't want anything between me and the data.

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Hi Community!

New Badges're already on Global Masters Advocacy Hub!

We're happy to announce that this year we again introduced three annual badges on Global Masters Advocacy Hub to let you remember how much you contributed to Developer Community in 2018. Here they are:

DC Best-Selling Author 2018
DC Expert 2018
DC Opinion Leader 2018

Let's take a closer look at the DC Wall of Fame 2018 and greet everyone with big applause!

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One of the many benefits of using Atelier for your ObjectScript development is its integration with a wide range of source control systems. This integration enables you to use modern development workflows which increase collaboration while minimizing the risk inherent to volatile code bases.

Veteran ObjectScript developers can tell you about the workarounds that were needed before they could use source control systems with products like Caché and Ensemble. One of these was to treat the data store itself effectively as a code repository. And so shared development environments became essential for many of our customers to be productive and successful.

For code shops that rely on shared development environments, adopting Atelier might seem too complicated. This article aims to provide a practical example to guide your team towards success with Atelier.

You can find an overview of the problems and solutions in this article here, which is a good place to start. This article assumes that you are familiar with the concepts introduced there.

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Article
· Jan 11, 2019 4m read
SQL Performance Resources

There are three things most important to any SQL performance conversation: Indices, TuneTable, and Show Plan. The attached PDFs includes historical presentations on these topics that cover the basics of these 3 things in one place. Our documentation provides more detail on these and other SQL Performance topics in the links below. The eLearning options reinforces several of these topics. In addition, there are several Developer Community articles which touch on SQL performance, and those relevant links are also listed.

There is a fair amount of repetition in the information listed below. The most important aspects of SQL performance to consider are:

  1. The types of indices available
  2. Using one index type over another
  3. The information TuneTable gathers for a table and what it means to the Optimizer
  4. How to read a Show Plan to better understand if a query is good or bad
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IRIS offers Durable %SYS Directory as a highly useful feature for working with containers.

Before inventing the wheel once more I'd like to know if a similar feature also exists for Caché / Ensemble.
Official documentation is quite silent about.
Though I have some names in mind that might know more about ( @Luca Ravazzolo ? @Dmitry Maslennikov ? @Eduard Lebedyuk ? )

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The last time that I created a playground for experimenting with machine learning using Apache Spark and an InterSystems data platform, see Machine Learning with Spark and Caché, I installed and configured everything directly on my laptop: Caché, Python, Apache Spark, Java, some Hadoop libraries, to name a few. It required some effort, but eventually it worked.

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Question
· Sep 12, 2019
Features of *ENSTEMP

ENSTEMP was addressed already some time ago;
Article: Preventing Globals From Getting Journaled (Continued from How do I Minimize My Journals)

and is also in public documentation
Where InterSystems IRIS Stores Temporary Production Data

Though I'd like to understand if this is just naming a non-journaled DB
or are there also typical features of CACHETEMP / IRISTEMP related to it:

  • automatic clean-up at system startup
  • keeping Global Buffers in memory as long as possible
  • late writing to the storage file

In other words is it a 2nd, 3rd, .. fully feature blown IRISTEMP ?

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InterSystems Official
· Jan 11, 2019
Support for Windows Server 2019

InterSystems is currently verifying InterSystems IRIS 2019.1 with Windows Server 2019. This work is scheduled to complete by the end of January 2019. In the second half of this month InterSystems will add Caché/Ensemble 2018.1.2 to be verified on this platform.

As we get closer to the completion of those tasks, I will update this post with information on release dates, and which products and version will support Windows Server 2019.

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InterSystems API Management (IAM) - a new feature of the InterSystems IRIS Data Platform, enables you to monitor, control and govern traffic to and from web-based APIs within your IT infrastructure. In case you missed it, here is the link to the announcement. And here's an article explaining how to start working with IAM.

In this article, we would use InterSystems API Management to Load Balance an API.

In our case, we have 2 InterSystems IRIS instances with /api/atelier REST API that we want to publish for our clients.

There are many different reasons why we might want to do that, such as:

  • Load balancing to spread the workload across servers
  • Blue-green deployment: we have two servers, one "prod", other "dev" and we might want to switch between them
  • Canary deployment: we might publish the new version only on one server and move 1% of clients there
  • High availability configuration
  • etc.
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