When data in the global buffer pool is written back to the database ach block is encrypted and stored. When data is retrieved it is decrypted as it is pulled into the Global Buffer Pool. When data is pulled from the Global buffer pool into your process it remains unencrypted. So there is an implicit cost in encrypting and decrypting the data blocks but this only happens in that single place of retrieval and storing. I can't remember what the cost is relative to not using encryption but it is documented. The same applies to data moving between IRIS and a web page and any tcp based communications

Hi Juuso

Are you running the ##class(Ens.Director).StopProduction() in the same namespace where your production is running?

If you are logging into terminal and your default namespace is not the same as the namespace where the production is running then you will get this error especially if your default namespace is "USER" which is not an Ensemble enabled namespace.

use

zn "{namespace_name}" to move to the correct namespace

if you are uncertain of the namespace name then you can call the utility

d ^%CD

It will prompt you for a namespace. Type in ? <enter> and you will be displayed a list of namespaces. Select the namespace you need to be in and then run your code.

Nigel

Does this by any chance have something to do with connecting a VGAstyle pin connector to a TCP connector?

The Developer Community is my favourite social media site. 30 years ago when I joined InterSystems there were 10 Sales Engineers, we designed our own courses for customers, we bemoaned the fact that there was no IRC channel we could hook into. There was no documentation other than that which came with the product. We had long conversations about how nice it would be if we could share or code, our experiences, the lessons we had learnt. Slowly things began to happen and 20 years later  DC was born and even in the last two years it has doubled in size, has reached Discord and Telegram. You can enter any word related to InterSystems or any of their products into Google and you will get pages and pages of results. It is one of the most active threads on LinkedIn. Congratulations to all of you who have made this possible. Thank you so very very much!

Hi Yuri and DC members

As you know I have challenged the DC members to come up with cheat sheets for IRIS and this is a perfect example of what I was hoping to see from DC members. With your permission, I would like to include it in my collection of IRIS Cheat/Information sheets. For other DC members reading this post and there is an aspect of IRIS that you are particularly familiar with or passionate about then have a go and see if you can come up with a similar informative diagram. Typically the cheat/information sheets are one-two page long. When it comes to a language explanation then you would typically create a page on commands, another on operators and so on. Let your inner artist guide your layout and colour scheme. Once I  have built up a substantial collection of IRIS topics I'll see if Olga, Evgeny and Anastasia and the ISC Experts will vote on the best layout and all cheat/information sheets will be modified to conform to that look. Who knows, they may even reward the winner. Bear in mind that ISC have a certain style, colour scheme and logo's and this should be taken into consideration/

Nigel

P.S. Sorry Yuri for high jacking your Article ro further my personal mission.

Hi David

This is a great article. I am currently working for a company that has used the task manager as a fundamental part of the application architecture. If I had been involved in the design of their application I would probably have used an Ensemble Production with services for each automation and then specify a time when the service should run. The application I am working on has given me a whole different view on how the Task Manager can be used so your article couldn't come at a better time from my point of view.

Nigel

That's a great competition. I look forward to It. 

That's absolutely brilliant. I had no doubt we would win like so many people comment on how friendly, passionate and useful our community sites are. Special thanks and congratulations to Anastasia, Olga, Evgeny and any others I have missed who put so much effort and enthusiasm into the success of this community. Love you all.

Nigel

In IRIS there is a whole load of JSON functionality that can be ing=herited into a class and for the [properties of the class you can specify the JSONNAME, JSONIGNORE, and various others (similar to the XML qualifiers in the Attributes of an XML Enable class) and so it is very easy to specify how to read a JSON message into an Object and visa versa. Likewise you can deal with null, true, false. I have also discovered, while battling with JSON in Ensemble that the value that gets written to a json string depends on where it comes from: for example, if you use SQL to retrieve your data to populate a json string then the LogicalToODBC method of a property will rer=trun null if the internal value is "" but will return "" if you are using objects. In the same way, a boolean field in SQL will display true or false if the display mode is ODBC.  However I agree with Danny that it is best to use the %Set `method to set the correct values into the JSON string for null, true, false. I have been unable to find any other way of doing this in Ensemble.

Nigel

The changes are good and will

Allov DC members to create a more 3D picture of of themselves and what they do. 

Nice changes to the way articles are handled. 

I thought I knew most of the of the debugging tricks in Caché, Ensemble and IRIS, and I have used the sql shell but had not used it the csp shell and I though I have found debugging basic csp pages using a log global and JS popup messages ( simplistic but they worked). However, when it came to Zen bebugging was a nightmare. I could view the page source and inspect the Dom but the sleepless nights I had with hgroups and vgroups and the inheritance of CSS styles could not explain why, on a form containing 15 text boxes, drop-down mists and some check boxes with all my captions neatly aligned left and my data entry controls aligned left in the second inner vgroup (page has outer vgroup, then an hgroup for my heading, and then two vgroups for my captions and data controls) and on one row out of 15, the caption was indented by 5 Characters of the data control would be rightalligned. For absolutely no obvious reason at all. I used the inspector to nest through every page element, the css in play, and the various in-line, align="left" (or equivalent) and I could spend days trying to work out why this one element was misbehaving. I spent more time debugging stupid things like this than I had spent in total in writing all of the Class Zen Get and Set methods, the sql queries to populate lists, getting the correct syntax for selected item vs identifier item and the menus and all the graphics and style sheets put  together. I never did find an easy way to debug these layout issues and I wonder if you had any tricks for resolving these silly layout issues that literally cost me days in testing?

Nigel

Congratulations everyone. Very impressive! 

Hi

I  checked and it is in the WRC Internal Distributions under 'Components' and the following releases are available for 2018.1. 4:

Yours

Nigel

Hi

May I ask what O/S you are running your live production on? One of the curious things I discovered where Ubuntu (and other Linux products)  differ from Windows is in the way that an Ensemble production will shutdown (and notionally restart). This is especially true if the queues are very long.

On Windows, I was used to setting the Timeout to 60 seconds and sometimes even less and so when I had to develop and deploy an application on Ubuntu I got very confused when we attempted to shut down the production (using 60 seconds) and the whole server would freeze and become unresponsive. At the time I knew nothing about Ubuntu (or Linux in general) and it was only when I got the Ubuntu expert to show me how I could monitor the system during Shutdown and what amazed me is that Ensemble spawned off 10's of jobs (up to 100) which I assumed it had down to try and clear the queues before shutting down and all of these extra processes consumed resources, CPU time and memory and of course the machine ground to a halt. The trick. Give the production at least 120 seconds and maybe even 180 seconds to shut down and you will find that it behaves perfectly correctly.

Yours

Nigel

Hi

In Cache/Ensemble/IRIS there is a %NOLOCK clause that you can use in an Insert, Update or Delete. But that disables locking in these oerations.

According to the documentation for TSQL the following documentation exists for LOCK TABLE:

Lock Table

Enables the current user to lock a table.

LOCK TABLE tablename IN {SHARE | EXCLUSIVE} MODE [WAIT  numsecs | NOWAIT]

schema.table

That's very cool and a very useful way of handling security and access to specific CALLS in the REST dispatch class. Impressed