The Netflix TechBlog

NOVEMBER 3, 2022

We introduce a caching mechanism in the API gateway layer, allowing us to offload processing from singleton leader elected controllers without giving up strict data consistency and guarantees clients observe. We started seeing increased response latencies and leader servers running at dangerously high utilization.

Cache 233

Cache Latency Traffic Systems 233

Speed Curve

JUNE 18, 2019

So where in a CI/CD pipeline do we put performance testing? The easy answer is: right after a change is deployed to an integration or testing environment. Typically, performance testing should happen at the same time as integration and acceptance testing. Network latency will affect performance testing.

Performance Testing 55

Performance Testing Testing Performance Cache 55

n0derunner

SEPTEMBER 17, 2018

In such a case we have a Bandwidth heavy workload profile (reporting) sharing with a Latency Sensitive workload (transactional). The key thing to observe is the impact on the latency sensitive (OLTP) workload. The “Data” disks are doing both reads (from DB cache misses) and writes committed transactions.

Performance Testing 40

Performance Testing Benchmarking Testing Performance 40

CSS - Tricks

JULY 25, 2019

Cache-Headers missing? These heuristics were coupled with a set of guidelines that would likely result in better performance, if followed, but were merely superficial and didn’t actually analyze the load and render experience that real visitors face. How Lighthouse calculates the Performance Score. Estimated Input Latency.

Google 73

Google Engineering Speed Mobile 73

Smashing Magazine

OCTOBER 31, 2023

You can see how you might wind up with different results in performance tests simply by the type of real-user monitoring (RUM) that is in use. INP is a measure of the latency for all interactions on a given page, where the highest latency — or close to it — informs the final score.

Speed 117

Speed Google Website Metrics 117

Smashing Magazine

SEPTEMBER 24, 2021

performance improvement can lead to a 10% increase in conversion. To mitigate the performance issues, we had to add a lot of (unbudgeted) extra servers and had to aggressively cache pages on a reverse proxy. It can be hosted on a CDN like Vercel or Netlify, which results in lower latency. As a result, they found that a 0.1s

Website 132

Website Code Servers Analytics 132

Smashing Magazine

SEPTEMBER 6, 2021

This approach was touted to be better for fine-grained caching because each subresource could be cached individually and the full bundle didn’t need to be redownloaded if one of them changed. In our own early tests , I found seriously diminishing returns at about 40 files. This is true, but only to a relatively limited extent.

Network 120

Network Servers Cache Traffic 120