Percona

MAY 15, 2023

Normally this solution requires a full code redesign and could be quite difficult to achieve when it is injected after the initial code architecture definition. As illustrated above, ProxySQL allows us to set up a common entry point for the application and then redirect the traffic on the base of identified sharding keys.

Traffic 120

Traffic Scalability Database Servers 120

Rigor

DECEMBER 19, 2019

Let’s start with a brief definition of two of the more prominent web performance methodologies: synthetic monitoring and real user monitoring (also known as RUM). The measured traffic is not of your actual users; it is synthetically generated to collect data on page performance. Understanding Web Performance Monitoring Methodologies.

Monitoring 40

Monitoring Benchmarking Website Traffic 40

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. You can create your own on Chrome UX Dashboard. Large preview ). Large preview ).

Performance 145

Performance Cache Media Metrics 145

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. The fastest Androids predictably remain 18-24 months behind, owing to cheapskate choices about cache sizing by Qualcomm, Samsung Semi, and all the rest. The Moto G4 , for example.

Performance 124

Performance Network Cache Metrics 124

Smashing Magazine

AUGUST 22, 2021

Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Latency can be roughly defined as the time it takes to send a packet from point A (say, the client) to point B (the server). Two-way latency is often called round-trip time (RTT).

Performance 106

Performance Network Latency Servers 106

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. Finally, not inlining resources has an added latency cost because the file needs to be requested. Support is unclear at this time.

Network 105

Network Servers Cache Traffic 105

Smashing Magazine

JANUARY 6, 2020

For Mac OS, we can use Network Link Conditioner , for Windows Windows Traffic Shaper , for Linux netem , and for FreeBSD dummynet. Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Lighthouse , a performance auditing tool integrated into DevTools. Large preview ).

Performance 145

Performance Cache Network Metrics 145

Percona

MAY 2, 2023

Cons of logical backups As it reads all data, it can be slow and will require disk reads too for databases that are larger than the RAM available for the WT cache—the WT cache pressure increases, which slows down the performance. Especially if going into or out of storage types that may throttle bandwidth/network traffic.

Best Practices 52

Best Practices Database Storage Servers 52

The Symphonia

MAY 22, 2018

I was a little restricted in my thinking the first time around and I’ve come to see FaaS as something not quite stateless, since caching state in a Lambda instance that might stick around for 5 hours is a perfectly reasonable idea. I also rewrote the section on Startup Latency since Cold Starts are one of the big “FUD” areas of Serverless.

Serverless 40

Serverless Architecture Lambda Azure 40

Smashing Magazine

AUGUST 9, 2021

You’ve probably heard things like: “HTTP/3 is much faster than HTTP/2 when there is packet loss”, or “HTTP/3 connections have less latency and take less time to set up”, and probably “HTTP/3 can send data more quickly and can send more resources in parallel”. TLS, TCP, and QUIC handshake durations ( Large preview ).

Transportation 145

Transportation Internet Internet Network 145

Smashing Magazine

JANUARY 7, 2019

For Mac OS, we can use Network Link Conditioner , for Windows Windows Traffic Shaper , for Linux netem , and for FreeBSD dummynet. Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Lighthouse , a performance auditing tool integrated into DevTools. Large preview ).

Performance 104

Performance Cache Network Metrics 104

Smashing Magazine

SEPTEMBER 24, 2021

That was until we went to production with our highest traffic customer. 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 114

Website Code Servers Analytics 114

Alex Russell

OCTOBER 22, 2017

Contended, over-subscribed cells can make “fast” networks brutally slow, transport variance can make TCP much less efficient , and the bursty nature of web traffic works against us. It simulates a link with a 400ms RTT and 400-600Kbps of throughput (plus latency variability and simulated packet loss). How long is too long?

Performance 68

Performance Benchmarking Network Mobile 68