MSH is a multi-threaded, parallel processing addon for Interspire Email Marketer(IEM) which helps improve it's sending speed.
While IEM is a featureful list manager, it's mail sending speed is notoriously low for most bulk sending purposes. On the contrary, popular mail transfer agent(MTA), such as Postfix, Exim, Sendmail, Powermta etc. are actually capable of processing mails at much higher rates than IEM can deliver them to. MSH add-on covers up the lag between processing speeds of your MTA and the list manager by adding parallel processing capabilities to IEM.
With the help of MSH add-on, IEM can easily achieve an speed-up of at least 5 times, while how far can you go is only limited by hardware resource. For more information, please check out the benchmark section from our original release announcement.
MSH addon is distributed under a "perpetual, installation domain restricted" license, which grants full permission to "source modifications" for internal use. Single domain license is priced at 300 USD only. Every additional purchase is subject to +15% discount upto a maximum discount of 45%.
Every purchase comes with -
IEM is only slow because it's a traditional single-threaded, single-process PHP application which, by design, can not take advantage of modern computers. The way MSH addon works is by transforming it into a modern day application, capable of leveraging multi-core processors and high speed storage media with the help of parallel processing technique.
Yes it is. MSH is not a clever database hack to simulate multi-processing, behind it is a clean and elegant technology that sets it apart from others. Reasons you might consider MSH for -
Also, our marketing partners sell the add-on with different brandings. If the add-on you are considering is from one of these sites, you are actually buying MSH. You are more than welcome to make a purchase through them.
Imagine an office worker who is overloaded with her desk full of files. She takes the files one by one, reviews them and then places them in a seperate pile so that her personal assistent can pick it up. Her day to day job is not only boring but also painstalkingly slow. Now replace the office worker with Interspire Email Marketer and her office assistent with your MTA of choice - you get the picture of how IEM processes campaigns and why it acts so slow while processing large campaigns.
Let's imagine an alternative situation where our ordinary worker becomes extra-ordinary and learns 'dark magic'! She magically makes five clone copies of herself along with the desk, places them in her office and then distributes the pile of files to all of them. While she is just handing over the files, her clones are busy processing them. This time, our clever worker will complete her works in one fifth of the previous situation. Interestingly, her office assistent will have an unusually busy day too. Finally, replace 'dark magic' with MSH add-on!
MSH add-on started life as an in-house software for one of our clients. First release of MSH was only compatible with "unix family" operating systems, as it used some unix-only PHP extensions for process control and inter process communication.After the release of IEM 6.1.1, MSH became unreliable and broken due to some unspecified behavior of PHP MySQL extension when forked. This prompted us to do a complete rewrite with different strategy.
MSH v2 (swiftrunner) solves all the problems it's predecessor had and is written around PHP extensions available in all platforms. As a result, for the first time, MSH is also capable of running in windows servers, besides unix family ones.
MSH is built around "multi processing library", a multi platform ,shared nothing, multi processing framework inspired by Python multiprocessing module(but very different from api level). It uses "proc family functions" for process spawning and "soq" for IPC.
"soq"(pronouced "so-queue") is a robust and reliable, pipe-like message queue on top of PHP sockets. Although we didn't make it publicly available yet, we are planning to gift it away to anyone interested, under the terms of LGPL license. Give us a knock if you want to try "soq" in your own PHP projects.