The Netflix TechBlog

SEPTEMBER 24, 2021

Our previous blog post described how MezzFS addresses the challenges for reads using various techniques, such as adaptive buffering and regional caches, to make the system performant and to lower costs. It downloads the part(s) that contain the referenced, uploaded bytes and keeps them in an LRU active cache.

Cloud 240

Cloud Media Storage Cache 240

Scalegrid

MARCH 28, 2024

In this comparison of Redis vs Memcached, we strip away the complexity, focusing on each in-memory data store’s performance, scalability, and unique features. 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

KeyCDN

SEPTEMBER 3, 2020

Even if a browser doesn't support WebP, our WebP caching feature will ensure that the correct image format is delivered. WebP delivery doesn't require any change on the origin server with the WebP caching feature. WebP size comparison In previous case studies, we've analyzed the different image sizes against WebP.

Processing 127

Processing Cache Website Servers 127

Dynatrace

APRIL 21, 2022

In comparison, the Dynatrace platform reliably takes that burden off human operators by utilizing its causation-based AI engine, Davis. Missing caching layers. Traditional observability solutions offer little information beyond dashboard visualizations. Too much data requested from a database. Missing retry and failover implementation.

Azure 246

Azure Monitoring Virtualization Metrics 246

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. But remember, ISPs also cache the DNS so by setting a longer TTL it means fewer queries to your DNS servers. So DNS services definitely go down!

Cache 134

Cache Website Internet Internet 134

Percona

APRIL 7, 2023

But since retrieving data from disk is slow, databases tend to work with a caching mechanism to keep as much hot data, the bits and pieces that are most often accessed, in memory. In MySQL, considering the standard storage engine, InnoDB , the data cache is called Buffer Pool. In PostgreSQL, it is called shared buffers.

Tuning 145

Tuning Cache Servers Benchmarking 145

VoltDB

MARCH 21, 2024

The most obvious and common way this happens is when companies try to evolve their caches into a data platform that can, for example, be used as highly available enterprise key-value stores for volatile data. Let’s look at a typical scenario involving the javax cache API, also known as JSR107. How hard can it be?

Cache 52

Cache Database Storage Availability 52

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.

Latency 213

Latency Cache Strategy Media 213

Highly Scalable

SEPTEMBER 18, 2012

In comparison with pure anti-entropy, this greatly improves consistency with a relatively small performance penalty. The Push-Pull approach greatly improves efficiency in comparison with the original push or pulls techniques, so it is typically used in practice. This redirect is a one-time and should not be cached.

Database 213

Database Latency C++ Scalability 213

ScaleOut Software

APRIL 22, 2020

The Solution: Distributed Caching. A widely used technology called distributed caching meets this need by storing frequently accessed data in memory on a server farm instead of within a database. It’s not enough simply to lash together a set of servers hosting a collection of in-memory caches.

Cache 52

Cache Storage Servers Database 52

ScaleOut Software

APRIL 22, 2020

The Solution: Distributed Caching. A widely used technology called distributed caching meets this need by storing frequently accessed data in memory on a server farm instead of within a database. It’s not enough simply to lash together a set of servers hosting a collection of in-memory caches.

Cache 52

Cache Storage Servers Database 52

Scalegrid

MAY 11, 2024

It uses a filesystem cache and write-ahead log for crash recovery. MongoDB makes use of both the filesystem cache and the WiredTiger internal cache. By default, the WiredTiger cache will occupy 50% of RAM minus 1 GB, or 256 MB. Compaction operation defragments data files & indexes. released in December 2015.

Storage 130

Storage Engineering Cache Database 130

ScaleOut Software

MAY 15, 2014

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. One or more specified cache servers are unavailable, which could be caused by busy network or servers. …). Please retry later.

Cache 40

Cache Servers Network Design 40

Enprowess

SEPTEMBER 7, 2021

Quick summary : Node vs React Comparison is not correct because both technologies are entirely different things. Node JS vs. React JS Comparison. Now, let us make a comparison between React and Node.js. Node JS vs. React JS Comparison. Caching of individual modules. Today, we will cover: Node.js React Overview.

Open Source 52

Open Source Virtualization Programming Servers 52

Smashing Magazine

JUNE 20, 2019

Browser Caching. Another built-in optimization of Google Fonts is browser caching. As the Google Fonts API becomes more widely used, it is likely visitors to your site or page will already have any Google fonts used in your design in their browser cache. — FAQ, Google Fonts. Further Optimization Is Possible.

Google 111

Google Performance Cache Website 111

Smashing Magazine

NOVEMBER 26, 2021

Your application might also suffer from caching, and performance issues. They handle a lot of things like caching and performance which are difficult to manage on your own. These packages will fetch and cache async data from your back-end API endpoints and make your application state much more maintainable.

Cache 145

Cache Code Testing Design 145

Percona

MARCH 17, 2023

Percona’s co-Founder Peter Zaitsev wrote a detailed post about migration from Prometheus to VictoriaMetrics , One of the most significant differences in terms of performance of PMM2 comes with the usage for VM, which can also be derived from performance comparison on node_exporter metrics between Prometheus and VictoriaMetrics.

Monitoring 117

Monitoring Scalability Database Cache 117

Smashing Magazine

JULY 29, 2019

For comparison, the same amount of data costs $6.66 For comparison, $3.67 MB , that suggests I’ve got around 29 pages in my budget, although probably a few more than that if I’m able to stay on the same sites and leverage browser caching. Let’s talk about caching. We’re going to check out Cache-Control. in the USA.

Cache 99

Cache Mobile Google Network 99

SQL Performance

MARCH 29, 2022

Simple parameterization has a number of quirks in this area, which can result in more parameterized plans being cached than expected, or finding different results compared with the unparameterized version. Reputation = 252552 ; These statements result in six cached plans, three Adhoc and three Prepared : Different guessed types.

Cache 90

Cache Servers Database Testing 90

Smashing Magazine

MAY 16, 2022

Examples of this might be, expecting that the HTML is fully static, such that we can cache it downstream in some deterministic manner — “partially dynamic” HTML bodies are much more likely to be handled incorrectly by caching logic. Here are a few that come to mind: Is this request served from the service worker cache?

Servers 111

Servers Monitoring Cache Network 111

Tim Kadlec

APRIL 10, 2023

I’ve seen a lot of sites suffering from extremely volatile TTFB metrics that vary dramatically based on geography or whether or not there’s a cache hit or miss. Measuring and optimizing your Time to First Byte is frequently a critical component of improving LCP. Another great example is the new Early Hints header.

Performance 111

Performance Servers Mobile Metrics 111

Highly Scalable

APRIL 2, 2012

The rationale behind these methods is that frontend should be able to fetch transient information very efficiently and separately from fetching of heavy-weight domain entities because this information cannot be cached. So, the only way was to cache all necessary data to minimize interaction with RDBMS.

Ecommerce 100

Ecommerce Cache Storage Architecture 100

Smashing Magazine

NOVEMBER 22, 2021

Another benefit of moving computations from browsers to servers is that the results of these computations can often be cached and reused between sessions even for unrelated visitors, thus reducing per-session execution time dramatically. The results of some of these APIs are also cached in a CDN as appropriate. Large preview ).

Website 141

Website Performance Google Website Performance 141

Speed Curve

MARCH 24, 2024

Tim's approach was to filter out the noise introduced by really fast response times that can be caused by leveraging the browser cache, prerendering, and other performance optimization techniques. Page was restored from back-forward cache* – The bfcache essentially stores the full page in memory when navigating away from the page.

Performance 80

Performance Cache Metrics Retail 80

Smashing Magazine

JUNE 26, 2019

Let the web developer handle all of the necessary speed optimizations like caching and file minification while you take on the following design tips and strategies: 1. When compared against Arial, a web-safe font that isn’t pulled from an external source, this is what happened: A comparison of loading speeds between Arial and Open Sans.

Website 111

Website Speed Mobile Design 111

CSS - Tricks

MAY 24, 2021

Jeremy Wagner sets up a “Streaming” Service Worker that caches common partials on a website (e.g. Real-world CSS vs. CSS-in-JS performance comparison — Tomas Pustelnik looks at the performance implications of CSS-in-JS. Now THAT’S What I Call Service Worker! Don’t use that because it turns out that sprites are bad.)

Performance 82

Performance Website Cache Internet 82

The Morning Paper

JUNE 16, 2019

The amount of computation required on a base update can be reduced by sharing computation and cached data between universes. We can build the dataflow graph up dynamically, extending the flow’s for a user’s universe the first time a query is executed. Implementing this as a joint partially-stateful dataflow is the key to doing this safely.

Database 90

Database Cache Benchmarking Efficiency 90

The Morning Paper

AUGUST 29, 2019

For query executors that can be frequently started and stopped the authors explore performance with cold and warm caches (where applicable), and also the horizontal and vertical scaling performance. Query performance is measured from both warm and cold caches. Key findings. Query restrictions.

Architecture 76

Architecture Cloud Storage Serverless 76

SQL Performance

MAY 20, 2022

The context is a comparison operator (equals), so the data type is shrunk to a tinyint. Neither is shrunk to a smaller integer subtype because the context is an arithmetical operation, not a comparison. Let’s look at the plan cache: SELECT. This is the smallest integer type able to contain the value 5. usecounts , CP.

Cache 55

Cache Database Servers Testing 55

HammerDB

JUNE 27, 2022

The wide range of database support gives HammerDB an advantage over other database benchmarking tools that only implement workloads against one or two databases, limiting comparison between database engines and assessing relative performance. Cached vs Scaled Workloads. Instead, most users prefer to implement a cached workload.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

Smashing Magazine

MAY 12, 2022

The ALL line in the graphs refers to all websites in CrUX, not just those that use frameworks, and is used as a reference for comparison. I assume that caching, both in the browser and CDNs, contributes to this as well. Percentage of websites with all green CWV for leading frameworks, sessions on mobile in the USA. Large preview ).

Google 136

Google Performance Website Mobile 136

SQL Server According to Bob

MAY 19, 2019

The lock manager has partitions, lock block cache and other structures. Reduce the number of partitions and size of the cache. IO Request Caches. SQLPAL may cache I/O request structures with each thread. SQL Server 2017 uses function address comparisons which the enablement of COMDAT would break. Lock Manager.

IoT 61

IoT Servers Development Cache 61

Smashing Magazine

AUGUST 31, 2021

To check a comparison on the most useful libraries, I can recommend you this post about React State Management. Libraries like these handle cache locally, so whenever the state is already available they can leverage settings definition to either renew data or use from the local cache. zero-config caching layer.

Cache 106

Cache Servers Best Practices Code 106

Percona

JANUARY 17, 2019

Aurora Parallel Query response time (for queries which can not use indexes) can be 5x-10x better compared to the non-parallel fully cached operations. For my test, I need to choose: Aurora instance type and comparison. Aurora instance type and comparison. The second and third run used the cached data.

Cache 71

Cache C++ AWS Airlines 71

KeyCDN

SEPTEMBER 12, 2019

KeyCDN’s Cache Enabler plugin is fully compatible the HTML attributes that make images responsive. It also allows for additional control over the caching of your images as well as hotlink protection. The Cache Enabler plugin then delivers WebP images based to supported browsers. jpg 480 KB 407 KB 43 KB 89% jpg-to-webp-2.jpg

Social Media 106

Social Media Media Google Website 106

The Morning Paper

JUNE 20, 2019

Compared to classic timing bugs racing between threads in the same process, here many of these bugs are about race conditions between multiple nodes and many of them are racing on persistent data like cached firewall rules, configuration, database tables, and so on. Constant-value setting incidents.

Cloud 81

Cloud Azure Cache C++ 81

Adrian Cockcroft

SEPTEMBER 23, 2024

There are three generations of GPUs that are relevant to this comparison. The Hopper H100 was announced in 2022 and is the current volume product that people are using, so that is used as the baseline for comparison. The HGX H100 8-GPU system is the baseline for comparison, and its datasheet performance is shownbelow.

Benchmarking 52

Benchmarking Energy Architecture Latency 52