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 92

Servers Monitoring Cache Network 92

Smashing Magazine

AUGUST 3, 2023

However, achieving a good LCP score is often a multi-faceted process that involves optimizing several stages of loading and rendering. HTML Processing Once a web page’s HTML file has been downloaded, the browser begins to process the contents line by line, translating code into the visual website that users interact with.

Performance 74

Performance Cache Traffic Metrics 74

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

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 203

Latency Cache Strategy Media 203

Percona

MAY 2, 2023

Let’s look at some questions I did that a MySQL DBA usually needs to answer in an interview process. 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.

Social Media 122

Social Media Database Servers Cache 122

Smashing Magazine

SEPTEMBER 28, 2022

Every unnecessary bit of JavaScript code you bundle and serve will be more code the client has to load and process. Jamstack is popular with documentation sites that usually compile code to HTML files and host them on the CDN. Active Memory Caching. Caching partially stores your data and is not used as permanent storage.

Cache 125

Cache Performance Servers Social Media 125

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

Brendan Gregg

JULY 2, 2021

E.g., to see process execution with timestamps using execsnoop(8): # execsnoop-bpfcc -T. Low frequency events such as process execution should be negligible to capture. execsnoop New processes (via exec(2)) table. biolatency Disk I/O latency histogram heat map. cachestat File system cache statistics line charts.

Latency 145

Latency Cache Energy Systems 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

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 Website 92

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?"

Blockchain 94

Blockchain Internet Internet IoT 94

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 113

Performance Network Mobile Latency 113

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. Establish a performance culture. Large preview ). Large preview ).

Performance 145

Performance Cache Media Metrics 145

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. A DNS lookup is the process of turning a human-friendly domain name like example.com into the machine-friendly IP address like 123.54.92.4 DNS Prefetching. The as Attribute.

Performance 106

Performance Games Servers Cache 106

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 71

Cache Latency C++ Programming 71

IO River

NOVEMBER 2, 2023

CloudFront makes a simple choice here as it offers direct integration with all these services to let you cache responses across its global edge locations. Therefore, there might be cases where your system could experience a downtime during the migration process. How does vendor lock-in occur?It's

Lambda 52

Lambda AWS Cache Website 52

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. Advances in browser content processing.

Performance 124

Performance Network Cache Metrics 124

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 145

Performance Cache Network Metrics 145

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

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

IO River

NOVEMBER 2, 2023

CloudFront makes a simple choice here as it offers direct integration with all these services to let you cache responses across its global edge locations. Therefore, there might be cases where your system could experience a downtime during the migration process. It's essential to understand that vendor lock-in cannot happen overnight.

Lambda 52

Lambda AWS Cache Website 52

Percona

MAY 2, 2023

Cons of logical backups As it reads all data, it can be slow and will require disk reads too for databases that are larger than the RAM available for the WT cache—the WT cache pressure increases, which slows down the performance. Hence, the node would still be available for other operations.

Best Practices 52

Best Practices Database Storage Servers 52

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., Answering it requires an understanding of how browsers process resources (which differs by type) and the concept of the critical path. for router components). ” A good question!

Performance 68

Performance Benchmarking Network Mobile 68

Brendan Gregg

JANUARY 16, 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 40

Cache Latency C++ Programming 40

Brendan Gregg

JULY 2, 2021

While basic, I've solved many perf issues with this tool alone, including for misconfigured systems where a shell script is launching failing processes in a loop, and when some minor application is crashing and is restarting every few minutes but has not yet been noticed. ## 2. execsnoop New processes (via exec(2)) table 2. acpid [.]

Open Source 40

Open Source Latency Cache Energy 40

Percona

MAY 15, 2023

In both cases, when using virtually-synchronous replication, the process will require certification from each node and local (by node) write; as such, the number of writes is NOT distributed across multiple nodes but duplicated. Because the solutions still rely on writing in one single node that works as Primary.

Traffic 125

Traffic Scalability Database Servers 125

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information ​​ that is contained ​​ in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. After reading ​​ this document you will better understand SQL Server I/O needs and capabilities.

Servers 40

Servers Cache Database Media 40

Alex Russell

APRIL 29, 2021

For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. Helps media apps on the web save battery when doing video processing. An extension to Service Workers that enables browsers to present users with cached content when offline. Offscreen Canvas. Compression Streams.

Media 145

Media Games Education Engineering 145

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 139

Ecommerce Website Government Internet 139

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. Best of all, our page can load much faster since everything is cached in Elasticsearch. Keeping Everything Up To Date Indexing the data once isn’t enough.

Cache 240

Cache Database Servers Latency 240

The Netflix TechBlog

DECEMBER 17, 2019

Nonetheless, we found a number of limitations that could not satisfy our requirements e.g. stalling the processing of log events until a dump is complete, missing ability to trigger dumps on demand, or implementations that block write traffic by using table locks. Some of DBLog’s features are: Processes captured log events in-order.

Database 212

Database Traffic Transportation Open Source 212

The Netflix TechBlog

DECEMBER 17, 2019

Nonetheless, we found a number of limitations that could not satisfy our requirements e.g. stalling the processing of log events until a dump is complete, missing ability to trigger dumps on demand, or implementations that block write traffic by using table locks. Some of DBLog’s features are: Processes captured log events in-order.

Database 197

Database Traffic Transportation Open Source 197

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. Best of all, our page can load much faster since everything is cached in Elasticsearch. Keeping Everything Up To Date Indexing the data once isn’t enough.

Cache 112

Cache Database Servers Latency 112

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

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. Best of all, our page can load much faster since everything is cached in Elasticsearch. Keeping Everything Up To Date Indexing the data once isn’t enough.

Cache 100

Cache Database Servers Latency 100

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 105

Performance Network Latency Servers 105