Hey Developers,

Watch this video to learn about observability of your InterSystems IRIS application with InterSystems System Alerting and Monitoring (SAM) and modern DevOps tooling:

⏯ Observability with InterSystems IRIS @ Global Summit 2022

https://www.youtube.com/embed/pJUm5GABMXU
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Sometimes we need to know for sure if the current environment has sufficient cores, memory, and bandwidth to support the planned number of users and such SLAs as latency, response time, and availability. This is true for databases and backends. This is why it is mandatory for critical applications and databases to simulate the users simultaneous/concurrent requests and collect metrics about performance and availability.

Nowadays, most applications are deployed on public cloud services. It brings many advantages including savings in human and material resources, the ability to grow quickly and cheaply, greater availability, reliability, elastic scalability, and options to improve the protection of digital assets. One of the most popular options is AWS. It allows us to deploy our applications usings virtual machines (EC2 service), Docker containers (ECS service), or Kubernetes (EKS service).

I am often asked to review customers' IRIS application performance data to understand if system resources are under or over-provisioned.

This recent example is interesting because it involves an application that has done a "lift and shift" migration of a large IRIS database application to the Cloud. AWS, in this case.

A key takeaway is that once you move to the Cloud, resources can be right-sized over time as needed. You do not have to buy and provision on-premises infrastructure for many years in the future that you expect to grow into.

Continuous monitoring is required. Your application transaction rate will change as your business changes, the application use or the application itself changes. This will change the system resource requirements. Planners should also consider seasonal peaks in activity. Of course, an advantage of the Cloud is resources can be scaled up or down as needed.

For more background information, there are several in-depth posts on AWS and IRIS in the community. A search for "AWS reference" is an excellent place to start. I have also added some helpful links at the end of this post.

AWS services are like Lego blocks, different sizes and shapes can be combined. I have ignored networking, security, and standing up a VPC for this post. I have focused on two of the Lego block components;
- Compute requirements.
- Storage requirements.

Hi,

I am trying to get the API Manager up and running.

I have enabled the application and IAM user and changed password.

when we run the iam_setup.sh I get the following.

Getting IAM license using your inputs...
Internal server error when testing inputs

I have check on Iris management portal , but could see no errors.

Hi,
just want to know if indexes in IRIS / SQL are autobuilding.

I define an index in a table and then i costantly do a lot of insert/delete in that table. Will i face index problem? Do i need to rebuild it often?

Thanks

Methods written in ObjectScript can use pass-by-reference arguments to return information to the caller. Python doesn’t support pass-by-reference arguments, so Embedded Python in IRIS doesn’t support them either. That's it, that's the end of the post, hope you liked it. 😉 But wait, what about the Classic Rock & Roll?

Is it possible to abort system start during SYSTEM^%ZSTART?

If some conditions are not met, I want to shut down IRIS instead of continuing with the startup.

When developing interoperability productions, it might be useful to have settings outside of a Business Host. The primary reason is when you need a setting to affect several different Business Hosts and want to guarantee that the value is the same. While System Default Settings can be used to propagate settings for Business Hosts, they can be changed by overriding the value on a BH level (although the advantage of Business Host settings set via SDS is that they don't need custom code which our current approach requires).
Another reason is when you need to affect non-setting parts of the Business Host configuration (PoolSize, Enabled, etc.)

We will be adding an env setting to a production.

Let's have a round of Code Golf!

String rotation is when you take a word and move some of its letters to the end of the word, so the first letter becomes the second letter, the second letter becomes the third, and so on. Last letter becomes first. Rotation can happen only in one direction →.
Your task is to write a method that will receive two strings. It then must return an integer value of how many times needed to rotate the strings to be equal.
As usual shortest solution wins.

Hi,

I trying to find out the procedure to kill off a currently printing Cache job.

The user wants to cancel the job as they put the wrong start date. The start date was set to be generated from the default date of 1 Jan 1900.

As the start date was such a long time ago, the report generation would take a long time.

I think the printing uses this "production" on the print server:

Report.Print.Service.CachePrintService

We are very eager to learn what kind of feedback you might have for InterSystems.

I'm trying to extract data from an IRIS database into SQL server with SSIS using the ODBC driver: InterSystems ODBC35 (ODBC-2023.1.0.229.0-win_x64.exe)

I have Unicode turned off in the ODBC settings.
I'm getting strange results - with some tables the SSIS ODBC connector will work but the ADO.net connector - using the same ODBC driver will. For other tables it's the other way round. The ADO.net sees the data as unicode and won't allow me to insert it into a non unicode table but ODBC will be fine.

In this brief article I would like to share a few strategies to run objectscript code in debug mode.

How to enter debug mode

There are two ways to launch the debugger.

Launching a command

Let's suppose that we have to debug the following method