The Netflix TechBlog

SEPTEMBER 8, 2020

This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI. ecosystem was chosen for this new service deserves an article in and of itself. video titles, descriptions) could be aggressively cached and reused across multiple requests.

Latency 243

Latency Cache Java Traffic 243

The Netflix TechBlog

SEPTEMBER 10, 2024

Since that presentation, Pushy has grown in both size and scope, and this article will be discussing the investments we’ve made to evolve Pushy for the next generation of features. In our case, we value low latency — the faster we can read from KeyValue, the faster these messages can get delivered.

Latency 233

Latency Cache Tuning Efficiency 233

The Netflix TechBlog

MARCH 7, 2024

In this article, we cover a few key integrations that we provide for various layers of the Metaflow stack at Netflix, as illustrated above. Deployment: Cache To produce business value, all our Metaflow projects are deployed to work with other production systems. Metaflow Hosting caches the response, so Amber can fetch it after a while.

Systems 238

Systems Media Cache Open Source 238

The Netflix TechBlog

MARCH 7, 2023

But we cannot search or present low latency retrievals from files Etc. We refer the reader to our previous blog article for details. We store all OperationIDs which are in STARTED state in a distributed cache (EVCache) for fast access during searches. This is obviously very expensive. Write algo runs into files.

Media 275

Media Latency Architecture Database 275

Highly Scalable

SEPTEMBER 18, 2012

In this article I’m trying to provide more or less systematic description of techniques related to distributed operations in NoSQL databases. In the rest of this article we study a number of distributed activities like replication of failure detection that could happen in a database. Read/Write latency. Data Placement.

Database 213

Database Latency C++ Scalability 213

Scalegrid

MARCH 28, 2024

Key Takeaways Redis offers complex data structures and additional features for versatile data handling, while Memcached excels in simplicity with a fast, multi-threaded architecture for basic caching needs. Redis is better suited for complex data models, and Memcached is better suited for high-throughput, string-based caching scenarios.

Cache 130

Cache Storage Architecture Scalability 130

The Netflix TechBlog

JULY 21, 2022

Problem Statement The purpose of this article is to give insights into analyzing and predicting “out of memory” or OOM kills on the Netflix App. Some features (as an example) include Device Type ID, SDK Version, Buffer Sizes, Cache Capacities, UI resolution, Chipset Manufacturer and Brand. of the time (False Positives).

Big Data 190

Big Data Cache Engineering Data Engineering 190

KeyCDN

FEBRUARY 4, 2021

Oddly enough we encountered this error to a third party website while writing this article. ISPs do cache DNS however which means if your first provider goes down it will still try to query the first DNS server for a period of time before querying for the second one. So DNS services definitely go down!

Cache 134

Cache Website Internet Internet 134

Smashing Magazine

SEPTEMBER 28, 2022

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 partially stores your data and is not used as permanent storage. Caching partially stores your data and is not used as permanent storage.

Cache 128

Cache Performance Servers Architecture 128

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Or even on a plane. Ford, et al., “TCP

Performance 103

Performance Latency Cache Virtualization 103

CSS - Tricks

APRIL 1, 2021

In that spirit, what we’re looking at in this article is focused more on the incremental wins and less on providing an exhaustive list or checklist of performance strategies. I’m going to audit the performance of my slow site before and after the things we tackle in this article. Compressing, minifying and caching assets.

Cache 92

Cache Social Media Media Network 92

Smashing Magazine

MAY 16, 2022

For this article, that’s all we’ll need to start exposing the value and leave other more specific articles to go deeper. There are a handful of different entry subtypes but, for the scope of this article, we will be concerned with the PerformanceResourceTiming and PerformanceNavigationTiming subtypes. More after jump!

Servers 95

Servers Monitoring Cache Network 95

CSS - Tricks

JULY 25, 2019

This article is from my friend Ben who runs Calibre , a tool for monitoring the performance of websites. In this article, we uncover how PageSpeed calculates it’s critical speed score. Cache-Headers missing? Estimated Input Latency. Estimated Input Latency. After that, it’ll be mitigated by cache.

Google 72

Google Engineering Speed Mobile 72

Brendan Gregg

AUGUST 29, 2021

Reads usually have apps waiting on them; writes may not (write-back caching). biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0. This is a 64-Gbyte memory system, and 48 Gbytes is in the page cache.

Cache 78

Cache C++ AWS Java 78

Speed Curve

FEBRUARY 5, 2024

Caching the base page/HTML is common, and it should have a positive impact on backend times. Key things to understand from your CDN Cache Hit/Cache Miss – Was the resource served from the edge, or did the request have to go to origin? Latency – How much time does it take to deliver a packet from A to B.

Servers 60

Servers Cache Retail Benchmarking 60

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

Smashing Magazine

APRIL 17, 2019

In this article we’ll take a look at the main types of Resource Hints and when and where we can use them in our pages. 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. <link rel="preconnect" href="[link].

Performance 107

Performance Servers Games Cache 107

Alex Russell

MARCH 6, 2021

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 fastest Androids predictably remain 18-24 months behind, owing to cheapskate choices about cache sizing by Qualcomm, Samsung Semi, and all the rest. The Moto G4 , for example.

Performance 127

Performance Network Metrics Cache 127

KeyCDN

SEPTEMBER 12, 2019

KeyCDN’s Cache Enabler plugin is fully compatible the HTML attributes that make images responsive. 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. The Cache Enabler plugin then delivers WebP images based to supported browsers.

Social Media 106

Social Media Media Google Website 106

Brendan Gregg

AUGUST 18, 2019

Originally posted at https:/opensource.com/article/19/8/introduction-bpftrace. For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. For smaller environments, it can be of more use helping eliminate latency outliers. 1 /* 2 * biolatency.bt

Latency 57

Latency C++ Cache Programming 57

Highly Scalable

AUGUST 20, 2013

This article is an effort to explore techniques used by developers of in-stream data processing systems, trace the connections of these techniques to massive batch processing and OLTP/OLAP databases, and discuss how one unified query engine can support in-stream, batch, and OLAP processing at the same time. Interoperability with Hadoop.

Big Data 154

Big Data Processing Lambda Database 154

Smashing Magazine

OCTOBER 31, 2023

Answering Common Questions About Interpreting Page Speed Reports Answering Common Questions About Interpreting Page Speed Reports Geoff Graham 2023-10-31T16:00:00+00:00 2023-10-31T17:06:18+00:00 This article is sponsored by DebugBear Running a performance check on your site isn’t too terribly difficult. That’s what this article is about.

Speed 100

Speed Google Website Metrics 100

ACM Sigarch

MAY 31, 2023

This article lays out the ideas and discussions shared at the workshop. There are three common mechanisms to access remote memory: modifying applications, modifying virtual memory, and hardware-level cache coherence support. even lowered the latency by introducing a multi-headed device that collapses switches and memory controllers.

Latency 52

Latency Hardware Cache Architecture 52

SQL Performance

APRIL 27, 2020

Hyperscale achieves high performance from each compute node having SSD-based caches which helps minimize the network round trips to fetch data. There is a lot of awesome technology involved with Hyperscale in how it is architected to use SSD-based caches and page servers. Serverless Database.

Azure 55

Azure Database Serverless Hardware 55

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Or even on a plane. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

SQL Performance

SEPTEMBER 17, 2019

This article will cover many areas that database administrators need to be aware of in order to properly license, recover, and tune a Reporting Services installation. Disk latency for ReportServer and ReportServerTempDB are very important. These topics apply to both SQL Server Reporting Services as well as Power BI Report Server.

Tuning 67

Tuning Servers Database Best Practices 67

Smashing Magazine

AUGUST 20, 2021

Platforms such as Snipcart , CommerceLayer , headless Shopify , and Stripe enable you to manage products in a friendly UI while taking advantage of the benefits of Jamstack: Amazon’s famous study reported that for every 100ms in latency, they lose 1% of sales. Jamstack sites are typically among the fastest on the web.

Ecommerce 140

Ecommerce Website Government Internet 140

Smashing Magazine

SEPTEMBER 6, 2021

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. Finally, not inlining resources has an added latency cost because the file needs to be requested. HTTP/3 performance features. Changes To Pages And Resources.

Network 108

Network Servers Cache Traffic 108

Dean Hume

APRIL 24, 2018

The title of this article might seem like clickbait - but bear with me. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time.

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. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time.

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. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time.

Energy 40

Energy Cache Traffic Website 40

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

Alex Russell

OCTOBER 22, 2017

It simulates a link with a 400ms RTT and 400-600Kbps of throughput (plus latency variability and simulated packet loss). Simulated packet loss and variable latency, however, can make benchmarking extremely difficult and slow. Our baseline, then, should probably trade lower throughput/higher-latency for packet loss.

Performance 74

Performance Network Benchmarking Mobile 74

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”. We will discuss these features in more depth later in this article.

Transportation 145

Transportation Internet Internet Network 145

The Morning Paper

JANUARY 23, 2020

1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. 1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. Members of the team begin diagnosing the issue using the #sysops and #warroom internal IRC channels.

Internet 53

Internet Internet Cache Engineering 53

Percona

JULY 17, 2023

First, some stage-setting for this blog article. Redis can handle a high volume of operations per second, making it useful for running applications that require low latency. An in-memory caching mechanism supports horizontal scaling, which enables it to handle large-scale applications and workloads effectively. It ranks No.

Open Source 80

Open Source Database Scalability Software 80

SQL Performance

APRIL 8, 2019

These AMD EPYC processors have a number of advantages for SQL Server workloads, as I will explain in this article. The L3 cache size is 64MB. I wrote about using CPU-Z to benchmark the Intel Xeon E5-2673 v3 processor in an Azure VM in this article. The L3 cache size is 64MB. AMD EPYC 7551 Details. Azure Lsv2 Details.

Azure 42

Azure Virtualization Storage Benchmarking 42