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NewBie's Corner Session 16 Introduction to New Concepts

Welcome to NewBie's Corner, a weekly or biweekly post covering basic Caché Material.

A number of new concepts are introduced in this session that will be developed more fully in subsequent sessions. It is necessary to at least introduce these concepts here because they are all interrelated.

Older style of MUMPS Programming

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InterSystems Official
· Aug 24, 2016
Alert: Database Compaction

August 24, 2016 – Alert: Database Compaction

This is an addendum to the Alert published on October 14, 2015 – Alert: Database Defragmentation.

That alert indicated that the database defragmentation utility in 2014.1 and higher, on all platforms except OpenVMS, could cause database degradation and the correction JO2871 is available to clients upon request and would be included in future releases. The correction was included in 2015.1.3, 2015.2.2 and 2016.1.

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This is a beginner’s guide to the design of a “MicroService” implemented in Ensemble. “MicroService” is a popular phrase these days which has a broad interpretation. My interpretation is: “MicroService” is a “NoSQL Service”. A what? The answer is in the article.

We learnt what the difference is between SQL and NoSQL databases. For me the difference is nearly the same between a SOA Web Service and a “MicroService”. I am going to explain it through an example.

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I tried to make atelier look more like XCODE with this simple trick or tip: change the default font to SF Mono and size 14.

To do it I did:

1) Install SF Mono font in the system which is the default font for XCODE and needs to be installed in order to use it.

You can find it in: /Applications/Utilities/Terminal.app/Contents/Resources/Fonts

Double Click SFMono-Regular.otf file and install it. You will get a warning of "serious problems" but it will work all right.

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We heard from a customer who wanted to display a version number as a read-only production setting. During the build on the build server, this version number is added to the Production class. This works fine, and the Version is displayed in the Portal, but the customer wanted to write protect it, so the enduser can’t change it. The customer had defined the setting like this:

Property Version As %String;
Parameter SETTINGS = "Version:Info";

We advised the customer to define SETTINGS like this instead:

Parameter SETTINGS = "Version:Alerting:label"

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Hi Community!

Meet the new group in Developer Community:

InterSystems Data Platform Blog!

In this group you'll find technical posts form InterSystems engineers and Community about InterSystems Data Platform technology cases which we consider as good or even best practices.

Every article in this blog passes InterSystems engineers' reviewing procedure and only then becomes available. You are very welcome to comment and share it!

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Presenter: Murray Oldfield
Task: Avoid bottlenecks caused by scaling up, before they become a problem
Approach: Discuss what operating system and InterSystems metrics you should look at and how to interpret them

Systems behave differently when database activity scales up. In the worst case, bottlenecks appear and users are impacted. This session shows you which operating system and InterSystems metrics you should be looking at and how to interpret them so you can head off bottlenecks before they impact users. This sessions also shows strategies for planning infrastructure taking into consideration InterSystems' data platforms requirements.

Content related to this session, including slides, video and additional learning content can be found here.

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Presenter: Mark Bolinsky
Task: Provide failover for distributed systems without using a VIP
Approach: Demonstrate using InterSystems’ database mirroring with external traffic managers such as F5 LTM/GTM

With distributed environments and even public cloud environments, the use of a VIP sometimes is not desirable or even possible given network topology or deployment. The session will demonstrate integrating database mirroring with external traffic managers such F5 LTM/GTM using API based triggers in InterSystems products to interface with the F5 appliances. This not only presents automated redirection for the local mirror members, but also provided automated client redirection to asynchronous DR mirror members.

Content related to this session, including slides, video and additional learning content can be found here.

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Presenter: Benjamin De Boe
Task: Extract specialized information from your unstructured data
Approach: Combine InterSystems iKnow technology with third-party and custom text-processing tools

This session explains how you can easily combine ISC, third-party and custom text processing tools to get the broadest insights in your unstructured data.

Content related to this session, including slides, video and additional learning content can be found here.

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Hello,

I hereby announce the creation of an IRC channel dedicated to Caché development:

* network: FreeNode (connect to server: irc.freenode.net)

* channel: ##cos (yes, two hashes).

Topic is anything related to Caché development in spite of the name (and the fact that of Caché development I only really know about COS anyway), so sorry in advance for the restrictive channel name :)

Waiting for you here! (my nick is idletask on freenode)

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We at George James Software recently released a new version of Deltanji, the native source code management tool for Caché, Ensemble and HealthShare.

Version 6.1 includes several enhancements, including easy creation of labels. Bulk transfer of large codesets is also now available from the browser UI.

A perpetually free "install and go" Solo Edition of Deltanji is available. Licenses can be purchased for other editions that provide more advanced code management and deployment features.

Deltanji is compatible with Atelier. It can also manage external files.

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Microsoft Office has components for using in third party applications: COM Objects for C++ and Interop Assemblies for .Net programming.

Many Cache projects used to include calls to those libraries. However, recently this solution started being problematic.

There are two main reasons - legal and technical. Let’s check the details.

Microsoft technology support

Microsoft is supporting Office Automation only for desktop computing.

It shall not be used for server computing, as they offer Sharepoint for this scenario. Have a look here:


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Article
· Dec 15, 2016 1m read
Version history for the production class

Last week I was onsite with a new customer of ours, implementing Deltanji to give them control of their development and deployment cycle. One particularly satisfying part of the visit was seeing their pleasure at how their production class now records its changes over time, allowing them to quickly diff the versions and see what configuration items have been added or what settings altered. ​

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This is a nice introductory explanation of MQTT that I thought would be of general interest. The technology used for the broker in this case is not that important as there are several brokers available.

At global summit we will be demonstrating ways to use MQTT with Ensemble to get information from the Internet of Things into your enterprise applications and business processes,

http://www.hivemq.com/blog/how-to-get-started-with-mqtt

Dave

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The DeepSee Shell Best Practices Series - Example of using the MDX subquery flag in the DeepSee Shell

We have different flags for DeepSee advisors to look into the execution details and the methods DeepSee is using to do calculations.

flag [flagname] [on|off] – Turn a diagnostic on or off.

flag cmbr on|off – Show current member processing.

flag compound on|off – Show rewrite of compound queries.

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Presenter: Mark Bolinsky
Task: Decide whether a converged infrastructure is ideal for your enterprise applications
Approach: Discuss best practices and provide guidance on the right questions to ask

The traditional use of “SAN storage” is no longer the only choice for deploying enterprise application. Software defined data centers are making inroads into enterprise data centers, and there is good reason for it. There is the potential for significant infrastructure cost savings, architecture simplification, reduced administration costs, and depending on the configuration - even better performance. This session will discuss some best practices and outline decision guidance to help you ask the right questions when considering hyper-converged architectures.

Content related to this session, including slides, video and additional learning content can be found here.

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Presenter: Alain Houf
Guest Speaker: Joop van Uden of Philips Healthcare
Task: Evolve your data model as you build your application
Approach: Provide a real-world example of how to leverage the flexibility of the document data model and how to easily integrate it into existing environments

Description: Come and learn how you can leverage new technology like the document data model in your current environment. We will explore a customer use case that managed to include this brand new technology within weeks in their current application stack and start to benefit from it.

Problem: Tools that help you build a stable backend, sometimes are in the way when you need to evolve.

Solution: Use flexible data models like the document data model for areas where you have to evolve constantly and mix and match it with the power of the OO and relational model.

Dependencies: Most value if session "The Power of Handling Data without a Schema" was attended before.

Content related to this session, including slides, video and additional learning content can be found here.

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