RabbitMQ is a message broker that allows producers (those who send a data message) and consumers (those who receive a data message) to establish asynchronous, real-time, and high-performance massive data flows. RabbitMQ supports AMQP (Advanced Message Queuing Protocol), an open standard application layer protocol.
The main reasons to employ RabbitMQ include the following:

• You can improve the performance of the applications using an asynchronous approach.
• It lets you decouple and reduce dependencies between services, microservices, and applications with the help of a data message mediator, meaning that there is no need for producers and consumers of exchanged data to know each other.
• It allows the long-running processing of sent data (with the results) to be delivered after utilizing a response queue.
• It helps you migrate from monolithic to microservices, where microservices exchange data via Rabbit in a decoupled and asynchronous way.
• It offers reliability and resilience by making it possible for messages to be stored and forwarded. A message can be delivered multiple times until it is processed.
• Message queueing is the key to scaling your application. As the workload increases, you will only have to add more workers to handle the queues faster.
• It works well with data streaming applications.
• It is beneficial for IoT applications.
• It is a must for Bots’ communication.

Hi devs!

Suppose I have an instance of a persistent class:

Set person = ##class(dc.Sample.Person).%OpenId(1)

Class is an ancestor of %JSON.Adapter.

How can I convert it to dynamic object with the properties that person.%JSONExport() provides?

I have a Linux server that has multiple instances installed on it (according to my documentation).

What is the best command to show:

- what instance are installed?

- what instances are running?

I did run 'iris list' but it shows only one instance.

Can anyone please help me which function i can use to handle this error.

Hi,

If I map all globals with (*) to a database1, then would like to map specific only some globals eg. MYGLOB* to be located in a different database2, which mapping will override the other, so would all globals that starts with MYGLOB* be placed in database1 or 2?

Thanks

The amazing Iris-nator has arrived in town.

He knows what you think, with just a few questions he is able to guess the character you have thought of.

Do you dare?

In a project I'm working on we need to store some arbitrary XML in the database. This XML does not have any corresponding class in IRIS, we just need to store it as a string (it's relatively small and can fit in a string).
Since there are MANY (millions!) of records in the database I decided to reduce as much as possible the size without compressing. I know that some XML to be stored is indented, some not, it varies.

Hello, we are currently using the Cache Database released in January 2018.

There are no specific classes or SQL mappings in the namespaces where data is stored.

Only a few routines(.mac) and stored data are in the global area.

In this case, when accessing the Cache DB through Java, is it essential to write SQL mappings or wrapper classes? The reason I ask is that our team doesn't have advanced developers who specialize in Cache.

Alternatively, is it possible to directly call pre-existing routines from Java?

Hi, Community!

🐍Great news—you can now use Python to customize your productions and add custom code!

Using Embedded Python in the BPL and DTL Editors

https://www.youtube.com/embed/D58dvcDQ-WY?utm_source=youtube&utm_medium=social&utm_campaign=D58dvcDQ-WY
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Hi Guys,

How can I use this same objectscript principle in embedded python to get the value of each field in my loop?

s sql="SELECT ID, Name, Age FROM Sample.Person WHERE Age="_Myage

Set RS=##class(%ResultSet).%New()

Set Ret=RS.Prepare(sql)

Set Ret=RS.Execute()

While RS.Next()

{

Set name=RS.GetData(2)

}

I installed a local docker container instance from here: intersystemsdc/iris-community

I'm trying to login: http://localhost:52773/csp/sys/UtilHome.csp

I thought if I used SYSTEM as the initial username, I could login, but I get #822 Access Denied.

Is that the correct username? maybe there's a better location to pull the docker instance.

***************nevermind, figured it out

Migrating from Oracle, MSSQL, or other purely relational database systems to a multimodel InterSystems IRIS is a strategic decision that requires careful planning and execution. While this transition offers significant benefits, including enhanced performance, scalability, and support for modern architectures, it also comes with challenges. In this article I will highlight some of the considerations connected to coding to ensure a successful migration. I will leave everything connected to an actual migration of structures and data outside the scope of this article.

First, when you're considering migrating to a different database system, you need to understand your business logic, whether it's on the side of the application (application server) or the database server. Basically, where do you have your SQL statements that you will need to potentially rewrite?

Hi devs!

What is the best way to return JSON in IRIS for a GET request in a REST app?

This is how I do it now: