Speed Curve

FEBRUARY 5, 2024

Latency – How much time does it take to deliver a packet from A to B. Definitely worth a read! Today, it's possible to add these headers from your CDN with ease, if they aren't already set up out of the box. Also measured by round trip time (RTT). Origin Time – How much time did the request spend from your origin?

Servers 57

Servers Cache Retail Benchmarking 57

The Morning Paper

OCTOBER 6, 2019

Prediction serving latency matters. Before you start building models, it’s worth spending time carefully constructing a definition of the problem you are trying to solve. Lesson 4: prediction serving latency matters. Even mathematically simple models have the potential of introducing relevant latency.

Latency 102

Latency Metrics Cache Design 102

Dynatrace

DECEMBER 2, 2021

To get a better handle on this, let’s start with some definitions. You can set SLOs based on individual indicators, such as batch throughput, request latency, and failures-per-second. And why have SLOs and SLIs become so important as teams automate processes to consistently meet SLAs and error budgets?

Metrics 191

Metrics Best Practices DevOps Infrastructure 191

The Netflix TechBlog

MARCH 4, 2024

In addition, even if a job’s memory configuration is initially well tuned, changes such as data size and job definition can cause performance to degrade. Upon further profiling, we found that most of the latency came from the candidate generated step (i.e.,

Tuning 210

Tuning Efficiency Big Data Engineering 210

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. The elephant in the room: Why does mobile INP perform so poorly? And why does desktop do so well? We are still working on understanding that. Here are some theories I explored.

Mobile 54

Mobile Performance Metrics Google 54

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

Testsigma

DECEMBER 12, 2020

This kind of approach is although a victim of latency and delayed execution. No matter what kind of cloud-based tool you are using, the latency is bound to happen since there are too many requests involved in between. Although these kinds of issues are nothing in front of infrastructure maintenance.

Testing 53

Testing Operating System Website Latency 53

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. But to prevent running afoul of latency (the 2 nd fallacy), we must also be careful not to download too little! It might even be necessary to have more than one domain model to resolve the forces of bandwidth and latency.

Latency 40

Latency Speed Network Strategy 40

The Morning Paper

SEPTEMBER 1, 2019

At the end of the day, you get the dual benefit of higher throughput and lower latency (as compared to coordination-based approaches) coupled with knowing that there isn’t some nasty invariant-violating concurrency bug waiting to bite you (so long as you specified your invariants and operation effects correctly of course!).

Database 42

Database Latency Games Design 42

The Morning Paper

NOVEMBER 24, 2019

To ensure low-latency and high availability (or even just the ability to work when offline) we want to be able to operate locally and independently on data types. composable) data type definitions, and in the process, ascribe to them a meaningful and useful distributed semantics. Local operation, global coordination.

Strategy 104

Strategy Latency Systems Processing 104

CSS - Tricks

AUGUST 16, 2019

Later in the piece, Mod describes fast software as being the very definition of good software and argues that every action on a computer — whether that’s a website or an app — should feel as if you’re moving without any latency whatsoever.

Performance 50

Performance Website Speed Latency 50

The Netflix TechBlog

JULY 26, 2021

Operational Reporting is a reporting paradigm specialized in covering high-resolution, low-latency data sets, serving detailed day-to-day activities¹ and processes of a business domain. Most of the business views created on top of the Iceberg tables can tolerate a few minutes of latency.

Big Data 253

Big Data Government Analytics Processing 253

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

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

Abhishek Tiwari

DECEMBER 27, 2017

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. Running Workloads in Kubernetes ??.

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 Symphonia

MAY 22, 2018

I also rewrote the section on Startup Latency since Cold Starts are one of the big “FUD” areas of Serverless. But I’ve already done that elsewhere, with John, so I left it with adding a link to our definition. I think there’s definitely a place for both models for now, as I describe. I thought it might do?—?I

Serverless 40

Serverless Architecture Lambda Azure 40

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

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

KeyCDN

SEPTEMBER 12, 2019

The main reason is because it decreases the latency to the user where they are located by serving your images from a POP physically closest to them. Indexing Images When it comes to Google finding your images you definitely want to make sure they are indexing properly.

Social Media 106

Social Media Media Google Website 106

All Things Distributed

DECEMBER 5, 2010

Authoritative servers hold the definitive mappings. Low-latency query resolution The query resolution functionality of Route 53 is based on anycast, which will route the request automatically to the DNS server that is the closest. There are two main types of DNS servers: authoritative servers and caching resolvers.

Cloud 117

Cloud Internet Internet AWS 117

The Netflix TechBlog

JUNE 13, 2023

Migrating Critical Traffic At Scale with No Downtime — Part 2 Shyam Gala , Javier Fernandez-Ivern , Anup Rokkam Pratap , Devang Shah Picture yourself enthralled by the latest episode of your beloved Netflix series, delighting in an uninterrupted, high-definition streaming experience.

Traffic 279

Traffic Metrics Systems Strategy 279

The Netflix TechBlog

FEBRUARY 9, 2021

At the highest level, the definition of the Passport is as follows: message Passport { Header header = 1; UserInfo user_info = 2 ; DeviceInfo device_info = 3 ; Integrity user_integrity = 4 ; Integrity device_integrity = 5 ; } The Header element communicates the name of the service that created the Passport.

Architecture 221

Architecture Latency Servers Website 221

Dynatrace

MAY 27, 2021

It keeps application processing closer to the data to maintain higher bandwidth and lower latencies, adheres to compliance regulations that don’t yet approve cloud managed services, and allows data center capital investments to be fully amortized before moving to the cloud.

AWS 131

AWS IoT Virtualization Infrastructure 131

The Netflix TechBlog

DECEMBER 21, 2020

These principles reduce resource usage by being more efficient and effective while lowering the end-to-end latency in data processing. File merging is necessary for a low latency streaming ingestion pipeline as data often arrive late and unevenly. Both automatic (event-driven) as well as manual (ad-hoc) optimization.

Storage 203

Storage Latency Efficiency Data Engineering 203

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?

Monitoring 178

Monitoring Latency Metrics Availability 178

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 type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Those days are long gone.

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 type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Those days are long gone.

Architecture 52

Architecture Performance Internet Internet 52

The Agile Manager

JULY 9, 2010

They are, by definition, far more risk prone. Firms dependent on low latency for competitive edge are not likely to get competitive advantage by hosting their applications in the cloud. As a business function, IT has no definition on its own. Investment banks are vastly different.

Retail 45

Retail Technology Technology Small Business 45

CSS Wizardry

MARCH 3, 2019

If there is a newer file available on the server, we definitely want to download it. If, however, there wasn’t a new file on the server, we’ll bring back a 304 header, no new file, but an entire roundtrip of latency. We can completely cut out the overhead of a roundtrip of latency. What do we mean by a mutable or immutable file?

Cache 264

Cache Latency Strategy Servers 264

CSS - Tricks

MARCH 16, 2020

If not, then check your Node installation is working and you’re definitely in the correct project directory. then(chrome => { const opts = { port: chrome.port }; lighthouse(url, opts); }); }; If you were to execute this code, you’ll notice that something definitely seems to be happening. You should see: $ node lh.js Hello world.

Google 82

Google Latency Website Metrics 82

Percona

MARCH 20, 2023

Let us take a look also the latency: Here the situation starts to be a little bit more complicated. MySQL Router is the one that has the higher latency no matter what. Looking at the latency, we can see that HAProxy gradually increased as expected, while ProxySQL and MySQL Router just went up from the 256 threads on.

Games 120

Games Latency Traffic Cache 120

The Netflix TechBlog

AUGUST 22, 2019

The configuration file, referenced scripts, and artifact dependency definitions all live in an internal git repository. The canary stage will determine a score based on metrics such as CPU, threads, latency, and GC pauses. Once online, Packer uses WinRM to copy files and run PowerShell scripts against the instance.

DevOps 207

DevOps AWS Tuning Infrastructure 207

Smashing Magazine

AUGUST 3, 2023

Core Web Vital metrics definitions. I know that is a lot of information to unpack in a single sitting, and it definitely took our team time to wrap our minds around what it takes to achieve a low LCP score. Note : Google plans to replace this metric with another one called Interaction to Next Paint (INP) beginning in 2024.

Performance 74

Performance Cache Traffic Metrics 74

Dynatrace

NOVEMBER 3, 2021

Monitoring , by textbook definition, is the process of collecting, analyzing, and using information to track a program’s progress toward reaching its objectives and to guide management decisions. Then we’ll look at how you can best utilize both to improve business outcomes. Monitoring vs. observability.

Monitoring 220

Monitoring Metrics DevOps Scalability 220

Dynatrace

OCTOBER 4, 2022

This data lands in its original, raw form without requiring schema definition. Data lakehouses deliver the query response with minimal latency. Data lakehouses typically provide support for data ingestion through a variety of methods. These include application programming interfaces, streaming, and more. Massively parallel processing.

Artificial Intelligence 209

Artificial Intelligence Storage Analytics Government 209

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. I’m going to update my referenced URL to the new site to help decrease latency that adds drag to the initial page load.

Cache 92

Cache Social Media Media Network 92