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Day: December 23, 2024

Models and Endpoints in Azure AI Foundry

Published 2024-12-23 by Kevin Feasel

Tomaz Kastrun continues a series on Azure AI:

Models from the model catalog can be deployed using programming languages or using the Foundry studio.

Model deployment has two types: Deploy from the base model or deploy from the fine-tuned model. The difference is that fine-tuned model is model taken from the model catalog and later tuned to an additional dataset, as the base model is the model as it is available in Azure AI Foundry.

Click through for a bit more information on the process.

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Switching between Python and PySpark Notebooks in Fabric

Published 2024-12-23 by Kevin Feasel

Sandeep Pawar wants to save some money:

File this under a test I have been wanting to do for some time. If I am exploring some data in a Fabric notebook using PySpark, can I switch between Python and PySpark engines with minimal code changes in an interactive session? The goal is to use the Python notebook for some exploration or use existing PySpark/SparkSQL or develop the logic in a low compute environment (to save CUs) and scale it in a distributed Spark environment. Understandably, there will be limitations with this approach given the difference in environments, configs etc., but can it be done?

Read on for the answer, as well as plenty of notes around it.

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Partitioned Tables and Faster Performance

Published 2024-12-23 by Kevin Feasel

Henrietta Dombrovskaya provides a warning:

I am unsure whether others have this problem, but I find myself explaining the benefits9and what’s not)of partitioning tables in Postgres over and over again.

Most times, developers have unrealistic expectations that if they partition a gigantic table, “it will be faster to select from it.” I always have to explain that the goal and the purpose of partitioning is improving maintenance, not query optimization, and if the execution speed of short queries remains the same as before partitioning, they should consider it a success (yes, there are no rules without exceptions, and there are cases of performance improvement, but those are exceptions indeed).

Henrietta’s example is specifically around Postgres, but it applies to SQL Server all the same: partitioning is primarily a maintenance benefit rather than a performance benefit.

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The Benefits of Read Committed Snapshot Isolation

Published 2024-12-23 by Kevin Feasel

Haripriya Naidu gets optimistic:

In this article, we are going to take a look at how write operations block read operations under default isolation level – Read Committed and how to avoid this using the optimistic isolation level – Read Committed Snapshot.

I do wish that this were the default for new databases in SQL Server, like it is in Azure SQL Database.

H/T Brent Ozar’s newsletter for pointing me in Haripriya’s direction.

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Calling IFTTT from Powershell

Published 2024-12-23 by Kevin Feasel

Denny Cherry triggers an action:

Sometimes, you want/need to have PowerShell do an action, but it’s hard to do through PowerShell, or it can’t be done at all. If the website If This Then That (IFTTT) can do it instead, you can still do it through PowerShell, with a little extra work. The way to do this will be to call a webhook on an IFTTT Applet and pass the information you need to send to the third-party service. A great example of this would be if you need to automate posting a new post to FaceBook. Posting to Facebook is shockingly hard as you have to write all the pieces to post to Facebook manually, and there’s no current way to post to Facebook via PowerShell. However, you can call an IFTTT Action and have that action do the actual posting to Facebook for you.

Click through for a generic form of the process.

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