Notes on DevOps, Resilience, Cloud and related topics - always related to how Product IT Teams can balance speed of delivery with reliability.
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IT Governance in the Agile Age, Part 1
Meeting IT governance objectives is not a natural strength of agile organizations - governance implies a top-down concept of management control, while bottom-up decision-making is a core concept of an agile organization. Let's explore how both can be combined.
The Microsoft Azure AD outage and what we can learn from it
On March 16th 2021, various Microsoft applications and 3rd party services were affected by an Azure AD incident. What do that incident and Google's authentication issue in December 2020 have in common?
Cracking five hard problems in load testing
Load testing and performance testing has become much easier as cloud-based tools and infrastructure have become available. But there is potential to make the process much much more efficient.
The great Google outage of 2020 and what we can learn from it
Even Google goes down occasionally, and the "great" Google outage on December 14th 2020 made headline news. We take a deeper look at the incident report to see what IT teams can learn from it.
Downtimes in Top-100 German Online Shops - Black Friday 2020
Even large e-commerce shops can't always keep up with traffic on Black Friday and Cyber Week. This is a collection of outages captured by our monitoring systems.
Disaster Recovery and resilience in microservices architectures
The traditional disaster recovery plan of restoring services in secondary data center no longer works in distributed systems. Microservice architectures call for a new DR model, for which we outline 7 key practices.
Making load tests life-like
Running stress tests against a website isn't hard. But how do you make sure they simulate actual user behavior?
A winning team: Cloud cost management meets performance management
DevOps survey: How cloud-native stacks win on stability and observability
Downtimes In Top-100 German Online Shops (3/2019)
Based on monitoring data, most of the top-100 German online shops suffered no downtime last month - but still, 26 of them suffered downtime during shopping hours
Monitoring customer experience at Douglas' CDN
Case Study: How Parfümerie Douglas, Europe's premier beauty retail business, built a real-time CDN log streaming service in order to quickly detect customer-facing error pages
CDN observability: What HTTP logs tell you about user experience
Logs from CDNs like Akamai can show what is hidden to web analytics tools: traffic and errors in pages across the user journey, even when there are technical issues with back-end servers. Using an open-source solution, they can be mined easily and cheaply.
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