#Caché

One of the great availability and scaling features of Caché is Enterprise Cache Protocol (ECP). With consideration during application development distributed processing using ECP allows a scale out architecture for Caché applications. Application processing can scale to very high rates from a single application server to the processing power of up to 255 application servers with no application changes.

As web application gets more complex, more technologies are involved into the application development. Once it gets deployed in large scale the configuration gets more complex too. For sure one of the most difficult part of the story is the security. In a complex solution when independent servers are feeding single web pages with contents, it is indeed challenging to keep the integrity of such system. HTML5 introduced a (weak) security constraint, the Cross Origin Resource Sharing (CORS). This article tells how to enable CORS for CSP/ ZEN applications.

Hello folks,

We have recently upgraded the cache (5.x) to cache 2016. All are working perfectly. But i am struggling in Telnet.

Working Good,

when i connect to telnet it automatically gets the username(for example when we give the system ip addr(148.168.2.50), the ip address is taken as username) and directly goto the Password field in Telnet on old cache (5.x).

Now my problem is,

I can't get the same from my new upgrade instance 2016. When i connect to telnet it directly goes to username field but not to password field.

Hello. When you export and then import a table of data, is the import smart enough to figure out if a row already exists in the new namespace, and if so update the row rather than just save/add the row?

For example, we have a table in DEV, and the same table in QA. The DEV table has more fields than QA. When we moved up the class, the field definitions went with the table into QA, so now the table definition is the same in both.

We don't often use SQL within our org, which is mostly due to the performance issue we experience due to the quantity of data we are reviewing.

Aside from the standard performance measures for non-Caché databases, are there any recommended approaches when querying large tables?

The table would have roughly 50M records, but there are not a finite amount of sub-nodes.

Enterprises need to grow and manage their global computing infrastructures rapidly and efficiently while simultaneously optimizing and managing capital costs and expenses. Amazon Web Services (AWS) and Elastic Compute Cloud (EC2) computing and storage services meet the needs of the most demanding Caché based application by providing
 a highly robust global computing infrastructure.

Hello Fellow Caché Developers,

The purpose of this post is to ask for everyone's thoughts and input around the use of transient, SQLCalculated/Computed properties within persistent classes.

This approach allows for extra data values needed in SQL queries to be available without having to join to other tables.

Very simple/basic example to illustrate the topic:

Let's say I have a persistent class named ICDAutoCodeDefn to hold ICD Auto-Coding definitions, such as:

I have a class which defines a property as array of %String. Is it possible to index values of this property and use this property in SQL?

I have tried 'Index idx On prop(ELEMENTS)' and then a select from the generated collection table, but this is still orders of magnitude slower than queries to the containing class.

In writing some code on:

Cache for Windows (x86-64) 2015.1 (Build 429U) Fri Feb 13 2015 14:37:23 EST

I noticed an unexpected "ROLLFAIL" error when a Unique Index fail was generated in a %Save() call.

The object SHOULD fail to save, since the Unique criteria is not met, but I didn't expect to see a ROLLFAIL error as the "Last Error".

When running the following class code:

I have a Zen page, and I would like to have an onload handler to run a bit of javascript when the page is ready. Unfortunately, the page inherits from a template, and the template already has an onload handler that does all kinds of useful things. Is there any way to override the onload handler in my page, while still being able to call the onload handler that is inherited from the template? In ObjectScript, there is ##super, but in javascript, there is no equivalent of that.

Good day

Additional tool for MUMPS servers MiniM InterConnect:

http://www.minimdb.com/tools/interconnect.html

to connect job on one MUMPS server to other job on other MUMPS server in client-server mode. This tool can connect different MUMPS systems on different OS and with different processors - MiniM, Cache and GT.M in any pairs.

Regards,

Eugene Karataev

Does anyone have a snippet to create the Namespace and database with defaults in one command?

Something like:

do ##class(Utils.Namespace).Create(Name)

Please share?

Thank you in advance!

Hi all,
Basically i have 2 queries..

1. Is there any simple way to fetch the data directly from the database (using the URL and credentials) from the csp file without creating a link table for that particular Table...??
   If there is, could you please share the syntax of using them ..?

2. Can we have an object return type from the below mentioned method to a javascript function.. ???

Does anyone know how to connect a Cache client to a GT.M database? I recently installed Osehra VistA on my PC and it uses GT.M, but we're supposed to use Cache Studio to develop. I tried adding a server to Cache (specifying 2222 as the port) and I get an "access denied" error. Port 2222 is the correct port which I use for for VirtuaBox and I have no problem connecting to VistA. I also tried going into the Management Portal to set up a local connection but this isn't working.