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

FEBRUARY 9, 2021

The API server orchestrates backend systems to authenticate the user. Upon successful authentication of the claims provided, the API server sends a cookie response back upstream, including the customerId (a Long), the ESN (a String) and an expiration directive. Zuul redirects the user call to the API /login endpoint.

Architecture 221

Architecture Latency Servers Website 221

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. Search engines check for a robots.txt file at the root of a site.

Social Media 106

Social Media Media Google Website 106

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

CSS Wizardry

MARCH 3, 2019

This includes CDNs, proxy servers, and the like. Once the 60 seconds is up, the browser will head back to the server to revalidate the file. It means ‘do no t serve a copy from cache until you’ve revalidated it with the server and the server said you can use the cached copy’. public and private. Cache-Control: no-cache.

Cache 264

Cache Latency Strategy Servers 264

Smashing Magazine

AUGUST 3, 2023

Core Web Vital metrics definitions. Time To First Byte (TTFB) This is the time it takes for the first piece of information from the server to reach the user’s browser. You need to beware of slow server response times, particularly render-blocking JavaScript or CSS, or slow network connections, all of which can negatively affect FCP.

Performance 74

Performance Cache Traffic Metrics 74

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. We can easily test server tuning changes, software upgrades, and other modifications to the runtime environment.

DevOps 207

DevOps AWS Tuning Infrastructure 207

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.Â

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.

Architecture 52

Architecture Performance Internet Internet 52

Randon ASCII

AUGUST 30, 2020

Sometimes tracking down a bug is as simple as paying attention to server dashboards, spending a few minutes in a profiler, or looking at compiler warnings. Server CPU Surprise. A few years ago I spent a few weeks doing some memory investigations on live game servers. The first server process that I profiled was… odd.

Games 142

Games Servers Code Monitoring 142

The Agile Manager

JULY 9, 2010

They are, by definition, far more risk prone. This includes things like data storage, servers, e-mail, office productivity applications, virus protection, security and so forth. Firms dependent on low latency for competitive edge are not likely to get competitive advantage by hosting their applications in the cloud.

Retail 45

Retail Technology Technology Small Business 45

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

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

Traffic 126

Traffic Scalability Database Servers 126

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 124

Games Latency Traffic Cache 124

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

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 219

Monitoring Metrics DevOps Scalability 219

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

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

Dotcom-Montior

NOVEMBER 24, 2021

Do you have a web server? Is the web server running? The last item to check was if the web server was able to talk to the database? 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. Peer-to-Peer.

Systems 74

Systems Monitoring Hardware Network 74

Dynatrace

JULY 10, 2019

OneAgents are optimized to send data to the Dynatrace servers with the smallest possible impact, querying the metrics every minute, and the data is a first-class citizen for the Dynatrace AI root-cause analysis. Dynatrace provides out-of-the-box support for VMware, AWS, Azure, Pivotal Cloud Foundry, and Kubernetes.

Java 137

Java Best Practices Metrics Azure 137

SQL Server According to Bob

JANUARY 11, 2020

Microsoft SQL Server I/O Basics Author: ​​ Bob Dorr, Microsoft SQL Server Escalation Published: ​​ December, 2004 SUMMARY: ​​ Learn the I/O requirements for Microsoft SQL Server database file operations. This will help you increase system performance and avoid I/O environment errors.

Servers 40

Servers Cache Media Hardware 40

Smashing Magazine

AUGUST 10, 2023

The tooling to get a report with details from the time it takes to establish a server connection to the time it takes for the full page to render is out there. In contrast, tools like DebugBear and WebPageTest use more realistic throttling that accurately reflects network round trips on a higher-latency connection.

Speed 81

Speed Monitoring Testing Network 81

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

The Netflix TechBlog

FEBRUARY 9, 2021

Server-generated assets, since client-side generation would require the retrieval of many individual images, which would increase latency and time-to-render. To reduce latency, assets should be generated in an offline fashion and not in real time. Localized images for each of the titles.

Engineering 165

Engineering Storage Latency Entertainment 165

The Netflix TechBlog

FEBRUARY 9, 2021

Plans & Offers Definitions Let’s define what a plan and an offer is at Netflix. The action corresponds to the button on the page and the withFields specify which fields the server expects to have sent back when the button is clicked. Lower latency as a result of fewer service calls, which means fewer errors for our visitors.

Engineering 142

Engineering Scalability Architecture Innovation 142

Percona

MAY 2, 2023

During the logical backups, using client API, the data gets read from the server and returned back to the same API, which will be serialized and written into respective “ bson”, “ json” or “ csv” backup files on disk depending upon the type of backup utilities used.

Best Practices 52

Best Practices Database Storage Servers 52

ScaleOut Software

JULY 14, 2021

Azure Digital Twins for creating a graphical representation of the assets within an organization using the Digital Twin Definition Language, processing events, and visualizing entity graphs to display and query status. Azure digital twins serve a different purpose.

IoT 52

IoT Azure Analytics Serverless 52

The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. At a minimum, we extract all of the type definitions from the GraphQL query and map them to a schema for Elasticsearch to use. The graph has two requirements. Search Indexer.

Cache 240

Cache Database Servers Latency 240

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

The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. At a minimum, we extract all of the type definitions from the GraphQL query and map them to a schema for Elasticsearch to use. The graph has two requirements. Search Indexer.

Cache 112

Cache Database Servers Latency 112

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

The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. At a minimum, we extract all of the type definitions from the GraphQL query and map them to a schema for Elasticsearch to use. The graph has two requirements. Search Indexer.

Cache 100

Cache Database Servers Latency 100

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)). This difference by itself doesn’t do all that much (it mainly reduces the overhead on the server-side), but it leads to most of the following points. Server Sharding and Connection Coalescing.

Network 105

Network Servers Cache Traffic 105

Brendan Gregg

SEPTEMBER 5, 2017

Here's some output from my zfsdist tool, in bcc/BPF, which measures ZFS latency as a histogram on Linux: # zfsdist. Tracing ZFS operation latency. Oracle VM Server is based on Xen. Many new tools can now be written, and the main toolkit we're working on is [bcc]. Hit Ctrl-C to end. ^C amazon").

Virtualization 76

Virtualization AWS Engineering Hardware 76

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

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. One subtle effect of browser attempts to avoid showing users blank white screens is that optimisations meant to hide latency from users may cause misattribution by users in cross-site flows.

Performance 124

Performance Network Cache Metrics 124

O'Reilly Software

MARCH 7, 2018

Since it is potentially unbounded, we can’t wait—buffer elements—until we have received all data before we act upon it, but need to do so in an incremental fashion—ideally without overwhelming ourselves, or overwhelming those who consume the data we produce or incur a too-high processing latency.

Transportation 72

Transportation Java Programming Architecture 72