The Netflix TechBlog

MARCH 7, 2023

But we cannot search or present low latency retrievals from files Etc. We store all OperationIDs which are in STARTED state in a distributed cache (EVCache) for fast access during searches. This API finds all Elasticsearch documents with ID1 and marks isAnnotationOperationActive=FALSE. This is obviously very expensive.

Media 275

Media Latency Architecture Database 275

The Netflix TechBlog

NOVEMBER 4, 2019

Best of all, our page can load much faster since everything is cached in Elasticsearch. Listening to Kafka events adds little latency, our fan out operations are really quick since we store foreign keys to identify the edges, and looking up data in an inverted index is fast as well. Our data changes constantly?—?

Cache 248

Cache Database Servers Performance 248

CSS Wizardry

AUGUST 13, 2019

To further exacerbate the problem, the 302 response has a Cache-Control: must-revalidate, private. header , meaning that we will always make an outgoing request for this resource regardless of whether or not we’re hitting the site from a cold or a warm cache. com , which introduces yet more latency for the connection setup.

Latency 210

Latency Cache Strategy Media 210

All Things Distributed

JUNE 21, 2018

In response to these needs, developers now have the choice of relational, key-value, document, graph, in-memory, and search databases. Use cases such as gaming, ad tech, and IoT lend themselves particularly well to the key-value data model where the access patterns require low-latency Gets/Puts for known key values.

Database 167

Database AWS Games Latency 167

Dynatrace

APRIL 7, 2022

Spring Boot 2 uses Micrometer as its default application metrics collector and automatically registers metrics for a wide variety of technologies, like JVM, CPU Usage, Spring MVC, and WebFlux request latencies, cache utilization, data source utilization, Rabbit MQ connection factories, and more. To learn more, see our documentation.

Metrics 130

Metrics Java Latency Cache 130

Dynatrace

APRIL 7, 2022

Spring Boot 2 uses Micrometer as its default application metrics collector and automatically registers metrics for a wide variety of technologies, like JVM, CPU Usage, Spring MVC, and WebFlux request latencies, cache utilization, data source utilization, Rabbit MQ connection factories, and more. To learn more, see our documentation.

Metrics 130

Metrics Java Latency Cache 130

Scalegrid

MAY 11, 2024

The default storage engine in earlier versions was MMAPv1, which utilized memory-mapped files and document-level locking. In-Memory Storage Engine, as the name suggests, stores data in memory for faster performance and lower latencies. It uses a filesystem cache and write-ahead log for crash recovery. released in December 2015.

Storage 130

Storage Engineering Cache Database 130

All Things Distributed

JANUARY 18, 2012

Amazon DynamoDB offers low, predictable latencies at any scale. This is not just predictability of median performance and latency, but also at the end of the distribution (the 99.9th percentile), so we could provide acceptable performance for virtually every customer. s read latency, particularly as dataset sizes grow.

Scalability 164

Scalability Database Ecommerce Latency 164

Percona

MARCH 20, 2023

When deciding what to pick, there are many things to consider, like where the proxy needs to be, if it “just” needs to redirect the connections, or if more features need to be in, like caching and filtering, or if it needs to be integrated with some MySQL embedded automation. Given that, there never was a single straight answer.

Games 126

Games Latency Traffic Cache 126

Smashing Magazine

MAY 16, 2022

This allows resource requests, including the HTML document itself, to be enriched with data during its lifecycle, and that information can be inspected for measuring the attributes of that resource! For the top-level HTML document, it is fetched upon user navigation but is still a resource request.

Servers 95

Servers Monitoring Cache Network 95

Smashing Magazine

SEPTEMBER 28, 2022

Jamstack is popular with documentation sites that usually compile code to HTML files and host them on the CDN. Active Memory Caching. When you want to get data that you already had quickly, you need to do caching — caching stores data that a user recently retrieved. Caching Schemes. Caching Schemes.

Cache 128

Cache Performance Servers Architecture 128

Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map. cachestat File system cache statistics line charts. runqlat CPU scheduler latency heat map. There is already documentation as man pages and example files in the bcc and bpftrace repositories that you can link to, to help your customers understand the tool output.

Latency 144

Latency Cache Energy Systems 144

Adrian Cockcroft

JANUARY 29, 2023

The mean and percentile measurements hide this structure, but the rest of this post will show how the structure can be measured and analyzed so that you can figure out a useful model of your system, understand what is driving the long tail of latencies and come up with better SLAs and measures of capacity.

Lambda 98

Lambda Latency Cache C++ 98

The Netflix TechBlog

NOVEMBER 4, 2019

Best of all, our page can load much faster since everything is cached in Elasticsearch. Listening to Kafka events adds little latency, our fan out operations are really quick since we store foreign keys to identify the edges, and looking up data in an inverted index is fast as well. Our data changes constantly?—?

Cache 115

Cache Database Servers Performance 115

Smashing Magazine

APRIL 17, 2019

All these resource hints use the rel attribute of the <link> element that you’ll be familiar with finding in the <head> of your HTML documents. The browser caches the results of these lookups, but they can be slow. You might think of a prefetch as being a bit like adding a file to the browser’s cache.

Performance 107

Performance Servers Games Cache 107

Percona

MAY 2, 2023

ChatGPT: The InnoDB buffer pool is used by MySQL to cache frequently accessed data in memory. If we expand the cache concept more, the buffer pool could be even less if the working set (hot data) is smaller. Also, there is a documented bug: OPTIMIZE TABLE does not sort R-tree indexes, such as spatial indexes on POINT columns.

Social Media 126

Social Media Database Servers Cache 126

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. Text-based assets.

Cache 92

Cache Social Media Media Network 92

Smashing Magazine

AUGUST 20, 2021

What’s interesting is there was little mention of static sites in MoveableType’s documentation at all. These use cases include: Documentation. Developers expect a lot from documentation sites, and a good experience will help win them over. Markdown is an excellent format for Documentation made even easier with a good CMS.

Ecommerce 140

Ecommerce Website Government Internet 140

Alex Russell

DECEMBER 18, 2022

The talks are up on YouTube , including my own (behind a paywall, but the slides are freely available [1] ): The talk, like this post, is an update on network and CPU realities this series has documented since 2017. More importantly, it is also a look at what the latest data means for our collective performance budgets. 4GiB of RAM.

Performance 120

Performance Mobile Network Latency 120

The Netflix TechBlog

NOVEMBER 4, 2019

Best of all, our page can load much faster since everything is cached in Elasticsearch. Listening to Kafka events adds little latency, our fan out operations are really quick since we store foreign keys to identify the edges, and looking up data in an inverted index is fast as well. Our data changes constantly?—?

Cache 100

Cache Database Servers Performance 100

The Morning Paper

FEBRUARY 23, 2020

Caching of query results on the other hand, looks like a good business model, at large enough scale these might amount to pretty much the same thing). How’s that going to work given what we know about the throughput and latency of blockchains, and the associated mining costs?" An embodiment for structured data for IoT.

Blockchain 94

Blockchain Internet Internet IoT 94

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low.

Database 223

Database Traffic Transportation Open Source 223

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low.

Database 209

Database Traffic Transportation Open Source 209

Smashing Magazine

AUGUST 3, 2023

While dynamic serving provides simplicity in implementation, it imposes significant time costs due to the computational resources required to generate the pages and the latency involved in serving these pages to users at distant locations. The shorter the TTFB, the better the perceived speed of the site from the user’s perspective.

Performance 75

Performance Cache Traffic Metrics 75

Alex Russell

MARCH 6, 2021

Unless a site is installed to the home screen as a PWA , any single page is just another in a series of documents that users experience as a river of links. 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 Moto G4 , for example.

Performance 127

Performance Network Metrics Cache 127

Alex Russell

OCTOBER 22, 2017

This isn’t true (more on that in a follow-up post), and sites which are built this way implicitly require more script in each document (e.g., 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 router components). Parsing CSS.

Performance 74

Performance Network Benchmarking Mobile 74

Percona

JULY 17, 2023

1 among non-relational/document-based systems ( DB-Engines, July 2023 ). Instead of the table-based structure of relational databases, MongoDB stores data in documents and collections, a design for handling large amounts of unstructured data and for real-time web applications. It ranks No.

Open Source 80

Open Source Database Scalability Software 80

Brendan Gregg

JANUARY 17, 2018

Short durations can be useful for understanding how well a WSS will fit into the CPU caches (L1/L2/L3, TLB L1/L2, etc). In this case, 28 Mbytes is a little larger than the LLC for this CPU, so may not cache so well (in a single LLC, anyway, and based on this single measurement). Why did I use a 100 ms interval? 16.570 403.66

Cache 62

Cache Latency C++ Programming 62

Abhishek Tiwari

NOVEMBER 3, 2018

Using CDN for the whole website, you can offload most of the website traffic to your CDN which will handle not only large traffic spikes but also reduce the latency of content delivery. They were using a very legacy CMS or more precisely a document management system which was painful to work with.

Systems 63

Systems Cache Website Network 63

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. What Does It All Mean? Large preview ).

Network 108

Network Servers Cache Traffic 108

Alex Russell

APRIL 29, 2021

For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. An extension to Service Workers that enables browsers to present users with cached content when offline. In the days that followed, belated documentation included a shocking revelation: against all expectations, iOS 14.5

Media 145

Media Games Education Engineering 145

Percona

APRIL 17, 2023

The CFQ works well for many general use cases but lacks latency guarantees. The deadline excels at latency-sensitive use cases ( like databases ), and noop is closer to no schedule at all. Make sure the drives are mounted with noatime and also if the drives are behind a RAID controller with appropriate battery-backed cache.

Best Practices 52

Best Practices Design Tuning Database 52

Percona

MAY 15, 2023

One example could be using an RDBMS for most of the Online transaction processing ( OLTP) data shared by country and having the products as distributed memory cache with a different technology. Let’s see the write operations with 24 and 64 threads: We get a gain of ~33% just using sharding, while for latency, we do not have a cost.

Traffic 128

Traffic Scalability Database Servers 128

Adrian Cockcroft

SEPTEMBER 23, 2024

The benchmarks are documented in the Blackwell Architecture Technical Brief and some screenshots of the GTC keynote, and Ill break those out and try to explain whats really going on from a benchmarketing approach. The configuration is documented in the following figure. we would expect.

Benchmarking 52

Benchmarking Energy Architecture Latency 52

Enprowess

SEPTEMBER 7, 2021

Real-time software system – Collaboration tools used for video/audio conferencing, document writing, Chat applications, etc. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers. Performance: React uses Virtual DOM (document object model), which improves the performance of applications.

Open Source 52

Open Source Virtualization Programming Servers 52

Rigor

JULY 2, 2019

You can find more information about modifying this file within your server’s documentation. Because HTTP redirection is handled server-side, it is typically faster than client-side redirection, especially if the browser can cache the new location of the requested file. Implementing this requires access to your server’s.htaccess file.

Mobile 60

Mobile Traffic Google Latency 60

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document.

Servers 40

Servers Cache Media Hardware 40