The case of the small log file and the CS_EVENT

The case of the small log file and the CS_EVENT_WAIT (BIO)

New years eve.The standard procedure every year.
At the client's side the ABF application is doing some intense querying
(selects and deletes) and hangs for quite some time.

The first thing that springs in mind is that there is another query that blocks.
Looking at the sessions using IPM, the session in question was in
CS_EVENT_WAIT (BIO) state so there was no blocking.

CS_EVENT_WAIT (BIO) means the session is waiting for a message to be received from or sent to the user interface.
What is that message? the application was there waiting for something!

After investigation and doing some admin work the guilty party was found!
It was the Ingres log file!
It was set by the client to 80MB (!!) and every transaction is writing there
data for undo/rollback blocks;since the log file had not enough room the transactions were queing.

So the installation had to be brought down and the log file incremented to a few GB
and the issue was resolved.

Fortunately, since I did not want to spent new year's at the office!!!

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Serverless JavaScript

We recently joined in an interesting two-hour long conversation about Serverless JavaScript led by Steve Faulkner of Bustle who answered questions on Bustle, the Shep framework, the mindset behind the AWS Lambda infrastructure, and related topics.

The discussion took place on the Sideway conversation-sharing platform on January 6th. Here we present the best takeaways from the session which really should be taken notice of by anyone working on AWS.

Steve Faulkner:
At Bustle we serve over 50 million unique readers per month through a "serverless" architecture based on AWS Lambda and Node.js. Of course there are still servers but we don't manage them. This shift has allowed us to develop products faster and decreased the cost of our infrastructure. I'll answer any questions about how we made this transition and how it has worked out. I'll also discuss some of the tools and best practises including our open source framework shep

Eran Hammer:
When would you…

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Completing project "Popular Movies" (see Part 2 of this series) signaled the end of "Android Developer". Now we are ready to tackle the second element of the program "Advanced Android Developer", a new class with a new syllabus and project. Continuing to chart my experience of Udacity's Android Developer Nanodegree we step up in level, embarking on the advanced part of the super-course.

Completing project "Popular Movies" (see Part 2 of this series) signaled the end of "Android Developer". Now we are ready to tackle the second element of the program "Advanced Android Developer", a new class with a new syllabus and project.

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This is what Wunderlist support had to say in response to my inquiry on Wunderlist's future:

"Now that the next evolution of Wunderlist is here, in the form of Microsoft To-Do Preview (https://www.wunderlist.com/blog/...), Wunderlist will no longer receive any updates or bug fixes and will eventually be retired. It won’t happen in the next few months and we’ll be sure to give our users plenty of notice beforehand. In the meantime, you can continue to use Wunderlist normally. Of course, we’d also love for you to try To-Do and let us know how you like it – and how we can improve it. While Wunderlist will continue to exist alongside To-Do for the time being, support for Wunderlist will eventually be removed. Not to worry, though! We will inform all Wunderlist users prior to shutting down service. You'll have ample opport…

Perl,Ingres,programming

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