Author Archives: Jens Hyldahl

Mar 09
2016

Clone Windows 10 Installation

Its not 100% easy to do a Windows 10 clone, eg. from a ordinary drive to an SSD drive but the steps below will do the trick. The boot process will normally not work out of the box without these … Continue reading

Posted in hardware | Leave a comment
Feb 05
2016

RSA encryption in Java – complete step by step tutorial

Generate the RSA keys Open your favourite Linux and make sure you have openSSL installed. Generate the private and public key. The public key is used by any interested senders, to use for encryption. The private key must be kept, … Continue reading

Posted in Uncategorized | Leave a comment
Dec 04
2015

WordPress, from slow to fast in a few steps

We took over a site written in WordPress recently, it was very, very slow. Ocassionally it took more than 10 seconds to load a page, normally after no one had visited the site for a while. Here is what we … Continue reading

Posted in database, php, wordpress | Leave a comment
Nov 09
2015

Linux shuts down after approximately two minutes

Recently i installed a S6760 notebook from MM Vision. Its a rebranded Clevo Notebook. I installed Ubuntu 14.04 on it, but to unfortunately the notebook restarted itself after around two minutes. Looking in the logs a line suggested that it … Continue reading

Posted in Uncategorized | Leave a comment
Aug 15
2015

Magento – is it not working as expected? Do you have module conflicts?

Magento is a great webshop with endless possibilites. However, its dynamic structure, and the way modules are written can give some headache. The problem can be that two or more modules inherit the same core class. Also called Magento module … Continue reading

Posted in magento, webshop | Leave a comment
Aug 04
2015

Storing your app data in the cloud

Do you want to store data in the cloud, but do not want to install Linux servers, load balancers and do server maintenance on a daily basis the rest of your life? One solution is to use Amazons AWS services. … Continue reading

Posted in android, database, ios | Leave a comment
Sep 30
2014

Are your PHP webserver scripts consuming too many resources?

If you have a hard loaded webserver, with php scripts, you might consider optimizing the PHP setup before investing in more hardware. Here are three tips for a production system, there are lot of other tweaks, but these three really … Continue reading

Posted in php | Leave a comment
Aug 21
2014

Free non-blocking hot backup of your MySQL database

Are you tired of mysqldump, but not willing to pay for the enterprise tools for Mysql? That was my situation a few years ago, and i started to look around for alternatives. No problem, you can do hot backup of … Continue reading

Posted in database | Leave a comment
Aug 21
2014

Scalable php server jobs with Gearman

The load on our servers are increasing, more and more users are joining us, and they all send updates on a regular basis. On every update we need to consider if we need to raise an alarm and send an … Continue reading

Posted in php | Leave a comment
Jan 29
2014

Magento redirects to old domain when domain is changed

If Magento redirects to your old domain, and you just changed the domain, you need to make a small modification to the Magento database. Find the table core_config_data and insert your new domain to rows where path is web/unsecure/base_url and … Continue reading

Posted in magento | Tagged , , | Leave a comment