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The Speed of Time

Brendan Gregg

Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? The CentOS flame graph: The Ubuntu flame graph: Darn, they didn't work.

Speed 126
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2023 Black Friday and Cyber Monday retail and e-commerce IT performance observations

Dynatrace

What was once an onslaught of consumer traffic between Black Friday and Cyber Monday has turned into a weeklong event, with most retailers offering deals well ahead of Black Friday. Social media was relatively quiet, and as always, the Dynatrace Insights team was benchmarking key retailer home pages from mobile and desktop perspectives.

Retail 222
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Dynatrace Application Security detects and blocks attacks automatically in real-time

Dynatrace

In today’s world, the speed of innovation is key to business success. WAFs protect the network perimeter and monitor, filter, or block HTTP traffic. Compared to intrusion detection systems (IDS/IPS), WAFs are focused on the application traffic. Dynatrace news. Unfortunately, they also introduce risk.

Traffic 235
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Measuring Network Performance in Mobile Safari

CSS Wizardry

Google has a pretty tight grip on the tech industry: it makes by far the most popular browser with the best DevTools, and the most popular search engine, which means that web developers spend most of their time in Chrome, most of their visitors are in Chrome, and a lot of their search traffic will be coming from Google. Why This Is a Problem.

Network 225
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Real user monitoring vs. synthetic monitoring: Understanding best practices

Dynatrace

Data collected on page load events, for example, can include navigation start (when performance begins to be measured), request start (right before the user makes a request from the server), and speed index metrics (measure page load speed). RUM, however, has some limitations, including the following: RUM requires traffic to be useful.

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Five-nines availability: Always-on infrastructure delivers system availability during the holidays’ peak loads

Dynatrace

For retail organizations, peak traffic can be a mixed blessing. While high-volume traffic often boosts sales, it can also compromise uptimes. Five-nines availability: The ultimate benchmark of system availability. The nirvana state of system uptime at peak loads is known as “five-nines availability.”

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Redis vs Memcached in 2024

Scalegrid

Introduction Caching serves a dual purpose in web development – speeding up client requests and reducing server load. For vertical scaling, Memcached allows augmenting existing servers with additional CPU cores and memory, thereby enhancing the capacity of the caching pool to manage higher traffic volumes and larger data loads.

Cache 130