Harald Zeitlhofer

Harald Zeitlhofer has 15+ years of experience as an architect and developer of enterprise ERP solutions and web applications with a main focus on efficient and performant business processes, usability and application design. As a Technology Strategist in Dynatrace's Centre of Excellence team he influences the Dynatrace product strategy by working closely with customers and driving their performance management and improvement at the front line. He is a frequent speaker at conferences and meetup groups around the world. Follow him @HZeitlhofer

Harald Zeitlhofer's articles

AWS IoT Marketplace has just landed; Dynatrace a proud partner

Today AWS announced the IoT marketplace and Dynatrace is a proud launch partner. Modern IoT ecosystems are as complex as they are powerful. Delivery chains have been extended to smart devices, which require an end-to-end approach to manage everything from the device to the gateway, and all the way to the cloud services powering smart IoT applications. Dynatrace provides the unique ability to provide visibility into the entire value… read more

Last-Minute Black Friday Rescue & Cyber Monday Readiness

In order to be ready for Christmas season, online retailers typically bring their shops into shape right before Black Friday. Together with Cyber Monday this is the most important day in the retailer’s year. Stilnest.com (@Stilnest) is a publishing house for designer jewelry, running their online shop on Magento. While the guys at Stilnest did a good job in preparing their environment, the interest in… read more

Cool new stuff on the NGINX front

Although NGINX conf 2015 took place back in September, not a day passes without someone asking me to summarize highlights from the event, future NGINX plans, what’s coming up, and related information requests, so I prepared this blog as an update on “what’s up with NGINX”. But first, I would like to once again thank the NGINX team for organizing a fantastic (sold out) event at a a very cool venue: Fort Mason, San… read more

How Stilnest Improved Their eCommerce Performance to Drive Higher Conversions

stilnest.com is an online platform for exclusive designer jewelry Magento is not only the most popular eCommerce platform, but among the top 5 content management systems in general. The community edition is available for free (open source). Since the first version of Magento was released in 2008, quite a lot of extensions and plugins have been developed and made available to the community in the Magento Connect platform,… read more

Velocity 2015 – Highlights from Day 2

Day 1 at Velocity is over and provided quite useful information in the tutorial sessions. We just went through the schedule for today’s sessions and found are some very interesting talks on the list. We – Andreas Grabner (@grabnerandi) and Harald Zeitlhofer (@hzeitlhofer) – will keep you updated here. If you are here at Velocity, stop by at our booth in the exhibition hall for a chat or track… read more

Proper configuration for running PHP on Nginx

When I started looking into Nginx, I was very impressed by the high performance of this lightweight HTTP server. But more and more I’ve become keen on the ease of its configuration. I have successfully used Nginx for serving PHP applications for quite a while, this article is about the lessons I have learned. I’m using Nginx on Ubuntu Linux, the installation is straight forward: sudo apt-get install nginx… read more

Easily Boost your Web Application by Using nginx

More and more Web sites and applications are being moved from Apache to nginx. While Apache is still the number 1 HTTP server with more than 60% on active Web sites, nginx has now taken over the 2nd place in the ranking and relegated Microsoft’s IIS to 3rd place. Among the top 10.000 Web sites nginx is already the leader in the field, with a market share of… read more

How to Spruce up your Evolved PHP Application – Part 2

In the first part of my blog I covered the data side of the tuning process on my homegrown PHP application Spelix: database issues, caching on both the server and the client. By just applying these insights I could bring Spelix to a stage where the number of users could be increased by more than 150%, and user experience could… read more

How to Spruce up your Evolved PHP Application

Do you have a PHP application running and have to deal with inconveniences like lack of scalability, complexity of debugging, and low performance? That’s bad enough! But trust me: you are not alone! I’ve been developing Spelix, a system for cave management, for more than 20 years. It originated from a single user DOS application, and has now emerged into a web application… read more