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Closed 9 years ago.
Well of course we could use quartz.net, which comes with nice features like concurrency control and load balancing. However it seems a bit bloated to me.
1) Am I wrong about this ?
2) If not how would you implement a cloud compliant scheduler (ie: either deployed on premise or within azure) ? Is Lokad scheduling the best approach ?
Based on the answers to this question ( Recommend a C# Task Scheduling Library ) quartz.net running in a worker role instance is the way to go.
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Closed 10 years ago.
I need to choose an open source BPEL engine for my work. I'm new to BPEL and I've never worked with any BPEL engine. Which engine would you recommend me that is easy to configure and use for a begginer? Brief explanation but I really have to experience at all.
We use Apache ODE at work, and it works fine. The project support we have via mailing lists is enough for us.
I used Oracle's BPEL engine about two years ago. It was both a nightmare to configure, and fairly half-baked in terms support. Even their example code didn't work properly. Things may have changed since then.
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Closed 10 years ago.
Really need a book recommendation for mastering node.js.
From this list...or ?
http://www.chapters.indigo.ca/home/search/?keywords=nodejs&pageSize=12
I personally like http://www.nodebeginner.org/ as a foundation.
PeepCode Full Stack Node.js screencast https://peepcode.com/products/full-stack-nodejs-i helps to understand aspects of practical use.
Also Google for deploying Node.js applications to production as it is not as straightforward as with more traditional server side technologies on web and it can make an impact on your application strategy.
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Closed 9 years ago.
I have a production web service built with Node JS(HTTP Server) on a Linux box with a HAProxy Load Balancer and wanted some kind of graphical tool to do live reporting on the server. I specially wanted to look at requests/min, request failures, etc. Anything out there people would suggest. I need something non-intrusive b/c I will be handling 20mil+ requests a day.
Have you looked at cube (https://github.com/square/cube), graphite/carbon (http://graphite.wikidot.com/) or opentsdb for such data monitoring/display?
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Closed 9 years ago.
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I'm new to Node.JS, already Googled for aswers but there is a lot of ways of doing this.
Do you have some sort of math to know when I'll need to scale my Node.JS server? And what tools you use for monitoring server performance and error track?
Thanks!
As #ThiefMaster said, this depends on your system. You need to monitor the requests for your site, the CPU load, memory footprint etc and decide if and when to add mode servers.
If you want to know more about Node.js performance read this good article: http://blog.3rd-eden.com/post/5809079469/theoretical-node-js-real-time-performance
If you need a Node.js metrics library, there are 2 ones which I can recommend: https://github.com/felixge/node-measured
https://github.com/mikejihbe/metrics
Resources:
monitoring a node.js server
I recommend monitoring your event loop and if it starts to back up more than 200ms on a regular basis, you'll need to scale.
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Closed 9 years ago.
I am looking for a way to get some sort of monitoring, statistic or management data out of a node.js server instance - not sure what to search for or where to start. Any advice appreciated.
Stats would be requests processed (if applicable) - number of connections and so on.
Don't know if it will fit your needs, but you can try to look at node-monitor. Also Joyent is doing some advanced real-time performance analysis stuff, but it's probably only for their cloud services.
Nodetime can monitor different metrics, such as HTTP Response time, CPU time, OS Load, etc. It is also possible to set up email Alerts based on these metrics. More in the blog post Monitoring Node.js Application Performance.