Smashing Magazine

FEBRUARY 12, 2025

Connecting to a server on the web typically takes three round trips on the network: DNS: Looking up the server IP address. What Network Latency Means For Time To First Byte Lets add up all the network round trips in the example above: 2 server connections: 6 round trips. Here, Ive tested a website thats hosted in Brazil.

Servers 78

Servers Latency Cache Website 78

The Netflix TechBlog

OCTOBER 29, 2020

The high likelihood of unreliable network connectivity led us to lean into mobile solutions for robust client side persistence and offline support. These expressions are evaluated in the current app session context, and can access data such as A/B test assignments, locality, device attributes, etc.

Mobile 279

Mobile Cache Network Technology 279

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. For the migration, testing was a first-class citizen. Replay Testing Enter replay testing.

Latency 241

Latency Cache Java Traffic 241

Smashing Magazine

MAY 9, 2022

Performance Game Changer: Browser Back/Forward Cache. Performance Game Changer: Browser Back/Forward Cache. With that caveat out of the way, let’s get to the guts of the article: What is the Back/Forward Cache and why does it matter so much? Didn’t The HTTP Cache Do All That Anyway? Barry Pollard.

Cache 106

Cache Games Performance Website 106

The Netflix TechBlog

JUNE 4, 2019

Because microprocessors are so fast, computer architecture design has evolved towards adding various levels of caching between compute units and the main memory, in order to hide the latency of bringing the bits to the brains. CFS is widely used and therefore well tested and Linux machines around the world run with reasonable performance.

Cache 258

Cache Latency Airlines Logistics 258

The Netflix TechBlog

MARCH 6, 2019

Disk Caching? — ? MezzFS can be configured to cache objects on the local disk. Regional caching? —?Netflix If an application in region A is using MezzFS to read from an object stored in region B, MezzFS will cache the object in region A. we only pay the transfer costs for one worker, and the rest use the cached object.

Media 218

Media Storage Processing Cache 218

The Netflix TechBlog

AUGUST 10, 2020

In addition, with 193M members and counting, there is a huge diversity in the networks that stream our content as well as in our members’ bandwidth. It is, thus, imperative that we are sensible in the use of the network and of the bandwidth we require. how long it takes for the video to start playing), rebuffer rates, etc.,

Innovation 242

Innovation Traffic Network Efficiency 242

The Netflix TechBlog

SEPTEMBER 18, 2024

In this example configuration, the ngsegment namespace is backed by both a Cassandra cluster and an EVCache caching layer, allowing for highly durable persistent storage and lower-latency point reads. "persistence_configuration":[ Developers just provide their data problem rather than a database solution!

Latency 260

Latency Storage Cache Servers 260

The Polyglot Developer

SEPTEMBER 9, 2019

Recently I’ve been playing around with Netlify and as a result I’m becoming more familiar with caching strategies commonly found with content delivery networks (CDN). The post Test ETag Browser Caching with cURL Requests appeared first on The Polyglot Developer.

Cache 69

Cache Testing Strategy Network 69

Dynatrace

NOVEMBER 28, 2022

Lambda then takes a snapshot of the memory and disk state of the initialized execution environment, persists the encrypted snapshot, and caches it for low-latency access. In our internal testing of SnapStart, we noticed an improved time of 200 to 300 milliseconds in P90 when compared to Lambda On-Demand; however, your results may vary.

Lambda 246

Lambda AWS Serverless Latency 246

The Netflix TechBlog

JULY 1, 2019

Our UI runs on top of a custom rendering engine which uses what we call a “surface cache” to optimize our use of graphics memory. Surface Cache Surface cache is a reserved pool in main memory (or separate graphics memory on a minority of systems) that the Netflix app uses for storing textures (decoded images and cached resources).

Cache 167

Cache Design Testing Development 167

DZone

OCTOBER 9, 2023

Bloom filters are probabilistic data structures that allow for efficient testing of an element's membership in a set. Bloom, these data structures have found applications in various fields such as databases, caching, networking, and more. Since their invention in 1970 by Burton H.

Efficiency 162

Efficiency Cache Network Database 162

Dynatrace

SEPTEMBER 13, 2023

Storing frequently accessed data in faster storage, usually in-memory caching, improves data retrieval speed and overall system performance. Beyond If so, test against the response time objective under the same Site Reliability Guardian. A study by Amazon found that increasing page load time by just 100 milliseconds costs 1% in sales.

AWS 305

AWS Efficiency Azure Cloud 305

ACM Sigarch

DECEMBER 19, 2022

When I worked at Google, fleet-wide profiling revealed that 25-35% of all CPU time was spent just moving bytes around: memcpy, strcmp, copying between user and kernel buffers in network and disk I/O, hidden copy-on-write in soft page faults, checksumming, compressing, decrypting, assembling/disassembling packets and HTML pages, etc.

Design 145

Design Systems Cache Network 145

Dynatrace

APRIL 21, 2022

Using a data-driven approach to size Azure resources, Dynatrace OneAgent captures host metrics out-of-the-box to assess CPU, memory, and network utilization on a VM host. Too many fine-grained services leading to network and communication overhead. Missing caching layers. Too much data requested from a database.

Azure 246

Azure Monitoring Virtualization Metrics 246

Scalegrid

APRIL 16, 2020

A vast majority of the features are the same, outside of these advanced features available through the BYOC model: Virtual Private Clouds / Virtual Networks. Amazon Virtual Private Clouds (VPC) and Azure Virtual Networks (VNET) are private, isolated sections of the cloud infrastructure where you can launch resources. Security Groups.

Cloud 242

Cloud Azure AWS Database 242

Speed Curve

JANUARY 19, 2025

Of course writes were much less common than reads, so I added a caching layer for reads, and that did the trick. A critical part of the code yellow was ensuring Google's sites would be fast for users across the globe, even if they had slow networks and low end devices. We agree the visibility that LoAF attribution brings is exciting!

Performance 98

Performance Google Speed Metrics 98

Jos

JUNE 2, 2018

You will work hard on implementing features, collaborating with other teams (eg adding scripts for analytics, ads, retargeting, A/B test), setting up CI/CD, ensuring security, and making sure the project is usable and pleasant to the eye. And don’t forget about covering your back with tests.

Performance 237

Performance Speed Google Media 237

Dynatrace

MAY 2, 2019

This blog post introduces the new REST API improvements and some best practices for streamlining API requests and decreasing load on the API by reducing the number of requests required for reporting and reducing the network bandwidth required for implementing common API use cases.

Best Practices 174

Best Practices Monitoring Cache Speed 174

KeyCDN

FEBRUARY 4, 2021

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. You can test the DNS lookup time and TTFB with a website speed test tool. Their network is made up of over 60 POPs and supports IPv6 everywhere.

Cache 134

Cache Website Internet Internet 134

Smashing Magazine

NOVEMBER 8, 2021

But then, quickly advances to contextual pricing, juggling complexity of large and frequently updated product catalog, managing continuously running multivariate tests and promotion campaigns, and serving customer-tailored dynamic recommendations. The journey, often, starts “simple” with localization. Large preview ). You need both.

Cache 139

Cache Best Practices Strategy Servers 139

Dynatrace

JANUARY 23, 2023

These include improving API traffic management and caching mechanisms to reduce server and network load, optimizing database queries, and adding additional compute resources, just to name some. While some of these are already done, such as adding additional compute, others require more development and testing.

Social Media 130

Social Media Cache Traffic Media 130

Smashing Magazine

JUNE 10, 2021

Are all the caching headers set correctly? Waterfaller: A Tool Focusing On Network Waterfalls. Contrary to Lighthouse or WebPage Test, Waterfaller focuses on one thing alone — issues in the network waterfall. Waterfaller focuses on issues in the network waterfall and provides recommendations for improvement.

Website 109

Website Cache Best Practices Network 109

Speed Curve

FEBRUARY 10, 2025

Photo by Freepik Part of the answer is this: You have a lot of control over the design and code for the pages on your site, plus a decent amount of control over the first and middle mile of the network your pages travel over. You also shouldn't rely on synthetic tests to give you a true sense of how your pages perform.

Hardware 52

Hardware Internet Internet Speed 52

Scalegrid

JANUARY 25, 2024

Effective management of memory stores with policies like LRU/LFU proactive monitoring of the replication process and advanced metrics such as cache hit ratio and persistence indicators are crucial for ensuring data integrity and optimizing Redis’s performance. Cache Hit Ratio The cache hit ratio represents the efficiency of cache usage.

Metrics 130

Metrics Monitoring Latency Cache 130

Smashing Magazine

NOVEMBER 22, 2021

While mobile devices have come a long way in terms of network and CPU speed, many of them are still significantly underpowered when compared to desktops, especially in countries where mobile connectivity is still poor. In particular, lab tests are critical for implementing performance budgets in order to prevent performance degradations.

Website 141

Website Performance Google Website Performance 141

Percona

APRIL 24, 2023

The more indexes, the more the requirement of memory for effective caching. Indexes need more cache than tables Due to random writes and reads, indexes need more pages to be in the cache. Cache requirements for indexes are generally much higher than associated tables. The actual impact depends on the index type.

Tuning 139

Tuning Cache Storage Database 139

Percona

OCTOBER 2, 2023

Caches | 12.4G Caches | 12.4G Caches | 12.4G 2004l# Percona Toolkit System Summary Report ###################### Date | 2023-09-25 14:43:34 UTC (local TZ: CDT -0500) Hostname | testbox Uptime | 44 min, 1 user, load average: 0.47, 0.67, 0.57 Platform | Linux Release | Ubuntu 22.04.3 LTS (jammy) Kernel | 6.2.0-33-generic

Cache 114

Cache Database Virtualization Servers 114

Smashing Magazine

JULY 18, 2022

There are many use cases: personalization, internationalization, theming, multi-tenancy, A/B tests…. If users have a slow network or a slow computer, they will see an ugly loader while their joke is being downloaded. Or hosting a full-fledged application directly on a Content Delivery Network (CDN)? Wow, you just got promoted!

Cache 127

Cache Website Servers Energy 127

The Morning Paper

OCTOBER 4, 2020

The first 5G networks are now deployed and operational. The study is based on one of the world’s first commercial 5G network deployments (launched in April 2019), a 0.5 The 5G network is operating at 3.5GHz). The maximum physical layer bit-rate for the 5G network is 1200.98 The short answer is no. 5G Coverage.

Energy 130

Energy Latency Performance Network 130

Smashing Magazine

AUGUST 9, 2022

It also lists cached resources and identifies unused Javascript. It graphs server, network, CSS, Javascript, critical content, and image optimizations to show the potential savings you could gain by incorporating fixes into your site. Network and CPU are throttled for lab data tests for more realistic conditions.

Performance 134

Performance Benchmarking Website Metrics 134

Testsigma

JUNE 3, 2021

These are the errors that also need attention during the testing phase. We can divide the errors during software development into two sections for easy understanding: Software errors Testing errors. These errors are caught during software documentation testing. Testing errors. Software errors. User interface errors.

Software 82

Software Software Testing Hardware 82

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 explains the challenges involved in deploying and testing HTTP/3 yourself. In our own early tests , I found seriously diminishing returns at about 40 files. This is more in-depth and technical.

Network 120

Network Servers Cache Traffic 120

The Netflix TechBlog

MARCH 5, 2019

the order of the rows on your Netflix home page, issuing content licenses when you click play, finding the Open Connect cache closest to you with the content you requested, and many more). What will be the cost of rolling out the winning cell of an AB test to all users?

Infrastructure 185

Infrastructure Cloud Scalability AWS 185

Smashing Magazine

JUNE 8, 2021

Image optimization , loading behavior and rendering in the browser require understanding of image formats and image compression techniques, image decoding and browser rendering, image CDNs and adaptive media loading, not to mention effective caching and preloading. Optimizing Network Requests with Caching and Preloading. +.

Media 124

Media Cache Google Best Practices 124

ScaleOut Software

MAY 15, 2014

Also, load-balancing after membership changes must be both multi-threaded and pipelined to drive the network at maximum bandwidth. Given all this, we thought it would be a good opportunity to see how we are doing relative to the competition, and in particular, relative to Microsoft’s AppFabric caching for Windows on-premise servers.

Cache 40

Cache Servers Network Design 40

Smashing Magazine

JUNE 2, 2021

Add to that the payment provider drop-in, and you have yourself some pages that no one will want to touch once they have been properly tested and work. And while you can usually cache the full page of an article, the same is not true of many shop pages and elements. Large preview ). Large preview ).

Performance 132

Performance Cache Website Mobile 132