Dynatrace

OCTOBER 4, 2021

An application programming interface (API) is a set of definitions and protocols for building and integrating application software that enables your product to communicate with other products and services. As a result, API monitoring has become a must for DevOps teams. So what is API monitoring? Watch webinar now!

Monitoring 169

Monitoring Latency Metrics Availability 169

IO River

NOVEMBER 2, 2023

Now, with viewers all over the world expecting flawless and high-definition streaming, video providers have their work cut out for them. This is where a well-architected Content Delivery Network (CDN) shines. Â The goal is to boost the pitfalls of network disruptions and vendor dependencies, all while pocketing cost savings.

Architecture 52

Architecture Performance Internet Internet 52

IO River

NOVEMBER 2, 2023

Now, with viewers all over the world expecting flawless and high-definition streaming, video providers have their work cut out for them. This is where a well-architected Content Delivery Network (CDN) shines. The goal is to boost the pitfalls of network disruptions and vendor dependencies, all while pocketing cost savings.

Architecture 52

Architecture Performance Internet Internet 52

Dotcom-Montior

NOVEMBER 24, 2021

There was a time when standing up a website or application was simple and straightforward and not the complex networks they are today. By definition, a distributed system is any system that comprises of multiple components on variety of machines that work together to appear as a single, organized system. The recipe was straightforward.

Systems 74

Systems Monitoring Hardware Network 74

Speed Curve

FEBRUARY 5, 2024

The use of server-timing headers by content delivery networks closes a big gap. Latency – How much time does it take to deliver a packet from A to B. Definitely worth a read! For more years than I care to mention, I've been advising folks that their TTFB should be under 500ms. But what happens when it doesn't?

Servers 57

Servers Cache Retail Benchmarking 57

Smashing Magazine

AUGUST 3, 2023

Core Web Vital metrics definitions. You need to beware that slow server response times can significantly increase TTFB, often due to server overload, network issues, or un-optimized logic on the server side. You need to beware of large HTML files or slow network connections because they can lead to longer download times.

Performance 75

Performance Cache Traffic Metrics 75

Alex Russell

JANUARY 30, 2024

It's time once again to update our priors regarding the global device and network situation. seconds on the target device and network profile, consuming 120KiB of critical path resources to become interactive, only 8KiB of which is script. What's changed since last year? and 75KiB of JavaScript. These are generous targets.

Performance 90

Performance Network Mobile Speed 90

Smashing Magazine

AUGUST 10, 2023

The other issue is that the data I’m getting back is based on lab simulations where I can add throttling, determine the device that’s used, and the network connection, among other simulated conditions. On that note, it’s worth calling out that there are multiple flavors of network throttling. Real usage data would be better, of course.

Speed 82

Speed Monitoring Testing Network 82

KeyCDN

FEBRUARY 4, 2021

So DNS services definitely go down! Using a fast DNS hosting provider ensures there is less latency between the DNS lookup and TTFB. Just like with content delivery networks, DNS hosting providers also have multiple POPs. Their network is made up of over 60 POPs and supports IPv6 everywhere.

Cache 134

Cache Website Internet Internet 134

Speed Curve

DECEMBER 4, 2023

Latency is traditionally worse on mobile Despite improved network conditions in some parts of the world, round trip time is still much worse for mobile than desktop. However, if that were the case, why do we see a smaller divide between mobile and desktop on metrics that are certainly more sensitive to network conditions?

Mobile 54

Mobile Performance Metrics Google 54

CSS - Tricks

APRIL 1, 2021

Redirects are often pretty light in terms of the latency that they add to a website, but they are an easy first thing to check, and they can generally be removed with little effort. Using a network request inspector, I’m going to see if there’s anything we can remove via the Network panel in DevTools.

Cache 92

Cache Social Media Media Website 92

Dynatrace

JULY 10, 2019

With insights from Dynatrace into network latency and utilization of your cloud resources, you can design your scaling mechanisms and save on costly CPU hours. Dynatrace provides out-of-the-box support for VMware, AWS, Azure, Pivotal Cloud Foundry, and Kubernetes.

Java 132

Java Best Practices Metrics Azure 132

VoltDB

MARCH 22, 2024

Existing systems don’t easily fit into the new API definition Last year’s Mobile World Congress (MWC) was attended by a number of vendors venturing into the API space. And while the APIs define contracts for what gets passed back and forth, we generally don’t discuss expected latency or availability. API Challenge #3.

Latency 52

Latency Java Code Servers 52

Testsigma

JULY 23, 2020

Let’s briefly describe the basic definitions of each of them first and then describe in detail the underlying differences that make them fall apart in certifying the quality of each of them. Any network-related latencies result in performance hindrances in these types of applications.

Testing 63

Testing Internet Internet Latency 63

Alex Russell

MARCH 6, 2021

Thanks to progress in networks and browsers (but not devices), a more generous global budget cap has emerged for sites constructed the "modern" way: ~100KiB of HTML/CSS/fonts and ~300-350KiB of JS (compressed) is the new rule-of-thumb limit for at least the next year or two. Modern network performance and availability.

Performance 124

Performance Network Cache Metrics 124

Particular Software

JUNE 3, 2019

We now live in an age when it's possible to stream high definition TV, and yet we are not satisfied. When transferring lots of data in a given period of time, network congestion can easily occur and affect the absolute speed at which we're able to download. The real problem is if everybody else wants to download really big movies too.

Latency 40

Latency Speed Network Strategy 40

Dotcom-Montior

DECEMBER 8, 2021

By ITIL definition, the service desk may take the form of incident resolution or service requests, but whatever the case, the primary goal of the service desk to provide quick and efficient service. Knowing when and where an error, downtime, or application latency occurs is a critical factor in limiting the impact to users and customers.

Social Media 90

Social Media Monitoring Latency DevOps 90

The Morning Paper

JUNE 30, 2019

In such a situation I’d expect to see unusually high latencies, but normal throughput). I was only partially right (there is a steady-state queue involved)… Plus, although it’s not described, the performance degradation observed in this case would almost certainly be poor latency and poor throughput.

Traffic 75

Traffic Latency Programming Scalability 75

High Scalability

FEBRUARY 19, 2021

As a basis for that discussion, first some definitions: Dependability The degree to which a product or service can be relied upon. In particular, they are not effective in networks spanning multiple regions because their efficiency breaks down if the latency becomes too high when communicating among peers. Health is not binary.

Engineering 215

Engineering Systems Scalability Availability 215

Alex Russell

OCTOBER 22, 2017

We constrain ourselves to a real-world baseline device + network configuration to measure progress. Budgets are scaled to a benchmark network & device. JavaScript is the single most expensive part of any page in ways that are a function of both network capacity and device speed. The median user is on a slow network.

Performance 68

Performance Benchmarking Network Mobile 68

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). As a result, users can identify latency and downtime promptly, and they can then scientifically isolate and diagnose the root cause of any performance issues that may arise.

Monitoring 40

Monitoring Benchmarking Website Traffic 40

KeyCDN

SEPTEMBER 12, 2019

An easy way to compress images is with our image processing service that happens to also be fully integrated into our existing network. Image CDN Using a content delivery network like KeyCDN, or what we also call an image CDN , can be one of the easiest and fastest ways to speed up the delivery of your images.

Social Media 106

Social Media Media Google Website 106

O'Reilly Software

APRIL 4, 2018

They have a clear input and output definition, and often a schema as well. A message-oriented implementation requires an efficient messaging backbone that facilitates the exchange of data in a reliable and secure way with the lowest latency possible. Leverage the convergence of fast data and microservices.

Architecture 80

Architecture Scalability Google Operating System 80

Smashing Magazine

JANUARY 11, 2021

Networking, HTTP/2, HTTP/3 OCSP stapling, EV/DV certificates, packaging, IPv6, QUIC, HTTP/3. If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled 3G network (e.g. Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. 300ms RTT, 1.6

Performance 145

Performance Cache Media Metrics 145

All Things Distributed

DECEMBER 5, 2010

The naming system that we are all most familiar with in the internet is the Domain Name System (DNS) that manages the naming of the many different entities in our global network; its most common use is to map a name to an IP address, but it also provides facilities for aliases, finding mail servers, managing security keys, and much more.

Cloud 117

Cloud Internet Internet AWS 117

Speed Curve

JUNE 18, 2019

Here's a short (and definitely not exhaustive) list of things that you may want to consider when running performance tests on an integration environment: Caches may need to be warmed up beforehand. Network latency will affect performance testing. The slightly more complex answer is: it depends.

Performance Testing 49

Performance Testing Testing Performance Cache 49

Abhishek Tiwari

DECEMBER 27, 2017

optimised container networking and security. Heron scheduler converts packing plan for a topology into pod definitions which is then submitted to Kubernetes scheduler via APIs [16]. direct access to raw block storage [18] without the abstraction of a filesystem for workloads that require consistent I/O performance and low latency.

Big Data 63

Big Data Storage Benchmarking Hardware 63

The Netflix TechBlog

SEPTEMBER 3, 2021

Remote calls are never free; they impose extra latency, increase probability of an error, and consume network bandwidth. By default, gRPC uses protobuf as its IDL (interface definition language) and data serialization protocol. Our protobuf message definition (.proto FieldMask is a protobuf message.

Design 245

Design Java Efficiency Code 245

The Netflix TechBlog

JUNE 14, 2023

And we definitely couldn’t replay test non-functional requirements like caching and logging user interaction. To determine customer impact, we could compare various metrics such as error rates, latencies, and time to render. We knew we could test the same query with the same inputs and consistently expect the same results.

Traffic 353

Traffic Latency Cache Metrics 353

Smashing Magazine

JANUARY 6, 2020

If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled 3G network (e.g. To make the performance impact more visible, you could even introduce 2G Tuesdays or set up a throttled 3G/4G network in your office for faster testing. 300ms RTT, 1.6 Mbps down, 0.8

Performance 145

Performance Cache Network Metrics 145

High Scalability

JANUARY 24, 2019

TServerless : We sat with a solution architect, apparently they are aware of the latency issue and suggested to ditch api gw and build our own solution. Right now api gw is good enough for our poc, but definitely not for our production load. Stand under Explain the Cloud Like I'm 10 (35 nearly 5 star reviews).

Internet 29

Internet Internet Scalability Games 29

Alex Russell

JULY 14, 2021

I've got a long blog post brewing on this, but jumping to the end, an operable definition is: A browser is an application that can register with an OS to handle http and https navigations by default. On Android today and early iOS versions, WebViews allow embedders to observe and modify all network traffic (regardless of encryption).

Google 121

Google Mobile Engineering Internet 121

Smashing Magazine

JANUARY 7, 2019

If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled network (e.g. To make the performance impact more visible, you could even introduce 2G Tuesdays or set up a throttled 3G network in your office for faster testing. 150ms RTT, 1.5 Mbps down, 0.7 Mbps up) with a throttled CPU (5× slowdown).

Performance 104

Performance Cache Metrics Network 104

The Netflix TechBlog

JANUARY 10, 2024

Since then, the video pipeline has undergone substantial improvements and broad expansions: Starting with Standard Dynamic Range (SDR) at Standard-Definitions , we expanded the encoding pipeline to 4K and High Dynamic Range (HDR) which enabled support for our premium offering. The requests from the studio side are generally latency-sensitive.

Processing 229

Processing Media Latency Innovation 229

The Netflix TechBlog

FEBRUARY 9, 2021

A few years ago, we decided to address this complexity by spinning up a new initiative, and eventually a new team, to move the complex handling of user and device authentication, and various security protocols and tokens, to the edge of the network, managed by a set of centralized services, and a single team.

Architecture 221

Architecture Latency Servers Website 221

Percona

MAY 2, 2023

Especially if going into or out of storage types that may throttle bandwidth/network traffic. Hence the speed to back up the data with mongodump is definitely very slow when compared to the other two options discussed. Many people don’t realize how long it takes to back up very large data sets.

Best Practices 52

Best Practices Database Storage Servers 52

John McCalpin

NOVEMBER 5, 2016

These cores have 2 functional units supporting Vector Fused Multiply-Add instructions, with 5-cycle latency on Haswell/Broadwell and 4-cycle latency on Skylake processors (ref: [link] ). With 2 FMA units that have 5-cycle latency, the code must implement at least 2*5=10 independent accumulators in order to avoid stalls.

Cache 40

Cache C++ Latency Hardware 40