KeyCDN

FEBRUARY 4, 2021

This query is performed by a Domain Name Server (DNS server) or servers nearby that have been assigned responsibility for that hostname. You can think of a DNS server as a phone book for the internet. A DNS server maintains a directory of domain names and translates them to IPs. So DNS services definitely go down!

Cache 134

Cache Website Internet Internet 134

Scalegrid

JANUARY 12, 2024

This article analyzes cloud workloads, delving into their forms, functions, and how they influence the cost and efficiency of your cloud infrastructure. These include popular technologies such as web servers and web applications, along with advanced solutions like distributed data stores and containerized microservices.

Cloud 130

Cloud Virtualization Storage Efficiency 130

Percona

MAY 15, 2023

In shard-nothing, each shard can live in a totally separate logical schema instance / physical database server/data center/continent. 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. The POC Why this POC?

Traffic 123

Traffic Scalability Database Servers 123

Dotcom-Montior

NOVEMBER 16, 2021

In one of our previous articles , we discussed what an SRE is, what they do, and some of the common responsibilities that a typical SRE may have, like supporting operations, dealing with trouble tickets and incident response, and general system monitoring and observability. Monitoring. Monitoring can provide a way to differentiate between.

Monitoring 91

Monitoring Google DevOps Engineering 91

Smashing Magazine

AUGUST 10, 2023

Measuring Running A Page Speed Test: Monitoring vs. Measuring Geoff Graham 2023-08-10T08:00:00+00:00 2023-08-10T12:35:05+00:00 This article is sponsored by DebugBear There is no shortage of ways to measure the speed of a webpage. Real usage data would be better, of course. That’s where a tool like DebugBear makes a lot of sense.

Speed 81

Speed Monitoring Testing Network 81

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. 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. 30.14% in the middle of the flame graph.

Speed 126

Speed Java AWS Virtualization 126

The Morning Paper

JULY 4, 2019

Two failure modes we focus on are a service becoming slower (increase in response latency) or a service failing outright (returning errors). Monocle grabs data from the Atlas telemetry system, the tracing system, and by querying runtime servers for configuration information such as time values. Defining and running experiments.

Latency 77

Latency Engineering Metrics Traffic 77

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours.

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours.

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours.

Energy 40

Energy Cache Traffic Website 40

Smashing Magazine

JANUARY 11, 2021

CrUX generates an overview of performance distributions over time, with traffic collected from Google Chrome users. But account for the different types and usage behaviors of your customers (which Tobias Baldauf called cadence and cohorts ), along with bot traffic and seasonality effects. You can create your own on Chrome UX Dashboard.

Performance 145

Performance Cache Media Metrics 145

Percona

SEPTEMBER 1, 2023

This reduction in latency ensures that applications and websites provide a more rapid and responsive user experience. Reduced Resource Usage Optimizing resource-intensive queries and configurations can lead to a reduced burden on your server. This does not apply to read (SELECT) traffic.

Tuning 52

Tuning Database Performance Hardware 52

Particular Software

AUGUST 16, 2021

Cosmos DB is a Platform-as-a-Service (PaaS) offering, which means thinking about servers isn’t something you have to do. Cosmos DB is available in serverless mode which is ideal for spikes or unpredictable workloads that don’t have sustained traffic. You never need to patch your host machine or Cosmos DB instance.

Azure 52

Azure Serverless Storage Database 52

Percona

APRIL 17, 2023

It is common to see a value of “ 0″ ( or sometimes “10” ) on database servers, telling the kernel to prefer to swap to memory for better response times. The swap issue is explained in the excellent article by Jeremy Cole at the Swap Insanity and NUMA Architecture. Two other schedulers are deadline and noop.

Best Practices 52

Best Practices Design Tuning Database 52

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. 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. 30.14% in the middle of the flame graph.

Speed 52

Speed Java AWS Virtualization 52

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. 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. 30.14% in the middle of the flame graph.

Speed 40

Speed Java AWS Virtualization 40

Smashing Magazine

JANUARY 6, 2020

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? It used to provide an insight into how quickly the server outputs any data. What does it mean? Large preview ).

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? Long FMP usually indicates JavaScript blocking the main thread, but could be related to back-end/server issues as well.

Performance 104

Performance Cache Network Metrics 104

Alex Russell

MARCH 6, 2021

Sadly, data on latency is harder to get, even from Google's perch, so progress there is somewhat more difficult to judge. CrUX data collection and first-party RUM analytics of these metrics require live traffic, meaning results can be predicted but only verified once deployed.

Performance 124

Performance Network Cache Metrics 124

Smashing Magazine

MAY 20, 2020

This article will help you with exactly that. The metrics selection is outside of the scope of this article and depends highly on the project context, but I recommend that you start by reading User-centric Performance Metrics by Philip Walton. This metric shows how much time it takes for the server to respond with something.

Performance 99

Performance Metrics Best Practices Code 99

Percona

JULY 1, 2023

It efficiently manages read and write operations, optimizes data access, and minimizes contention, resulting in high throughput and low latency to ensure that applications perform at their best. If you need to enable Amazon RDS remote access, this article will help you do so.

AWS 52

AWS Database Serverless Storage 52

CSS - Tricks

NOVEMBER 1, 2019

TTFB represents the time browser waits to receive first bytes of the response from server. I faced clients who requested support of IE 10- IE 11 because the traffic from those users represented 1%, which equalled millions of dollars in revenue. Latency matters. Specifically, we will use metrics like: Time To First Byte ( TTFB ).

Speed 46

Speed Mobile Metrics Scalability 46

Alex Russell

OCTOBER 22, 2017

Late-loading JavaScript can cause “server-side rendered” pages to fail in infuriating ways. The server sends it as a stream of bytes and when the browser encounters each of the sub-resources referenced in the document, it requests them. For a timely introduction, I recommended Kevin Schaaf’s recent talk.

Performance 68

Performance Benchmarking Network Mobile 68

Brendan Gregg

SEPTEMBER 5, 2017

I wrote an ftrace toolkit, [perf-tools], and the article [Ftrace: the hidden light switch]. - **perf**: since 2009, this started as a PMC profiler but can do tracing now as well, usually in a dump-and-post-process style. Here's some output from my zfsdist tool, in bcc/BPF, which measures ZFS latency as a histogram on Linux: # zfsdist.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Smashing Magazine

SEPTEMBER 24, 2021

Over those years, we have seen the technology stack evolve from server-rendered pages with some minor JavaScript and CSS to full-blown JavaScript applications. Although mixing the concepts of a server web framework like ASP.NET with a client-side web framework like React made things more complicated, we were quite happy with the solution.

Website 114

Website Code Servers Analytics 114

Smashing Magazine

AUGUST 22, 2021

HTTP/3 performance features ( current article ). 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).

Performance 106

Performance Network Latency Servers 106

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”. Websites would magically become 50% faster with the flip of a switch!

Transportation 145

Transportation Internet Internet Network 145

Smashing Magazine

SEPTEMBER 6, 2021

Next, we’ll look at how to set up servers and clients (that’s the hard part unless you’re using a content delivery network (CDN)). Practical HTTP/3 deployment options ( current article ). You would, however, be hard-pressed even today to find a good article that details the nuanced best practices. HTTP/3 performance features.

Network 105

Network Servers Cache Traffic 105