27
Sep

Highly scalable applications, Performance first approach

27 Sep
Highly scalable, highly available, cloud, continuous integration. They are all buzz-words of the Internet age we are living. The reality is in a way or another your digital presence has to intersect with this technologies.
One thing we care most at AG Prime is the performance of your application. Studies reveal that every second counts. Based on the Kissmetrics infographic we can extract the following statistical data: 
  • Page abandonment increases with 25% to 50% if you load time is more than 4 seconds,
  • 73% if internet users said they have encountered a website that was too slow within the last 12 months,
  • 47% of the consumers expect a website to load in less than 2 seconds, 44% of them will tell their friends about bad experiences,
  • 1 second delay can result in 7% reduction in conversions.
Following this informations we have decided to keep performance on our to-do list every day.
We have introduced since 2016 a new KPI in our acceptance criteria for all stories developed in-house. From the very begining we decide what is the maximum load time that both Staging and Production environments should support and our QA team validates against this KPI before a task is approved.
We also leverage the support that Blackfire offers us to debug and improve slowdowns in applications before this becomes a problem. Our QA team is experienced in using jMeter to implement post-production tests on environments to guarantee performance has not been afected by newer versions.
Code improvments on server side together with caching layers and headless approach makes our solutions capable of delivering milions of requests without too much costs or effort.
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