CSS Wizardry

MAY 31, 2019

Users might already have the file cached. If website-a.com links to [link] , and a user goes from there to website-b.com who also links to [link] , then the user will already have that file in their cache. Penalty: Caching. This makes it very safe and sensible to enforce a reasonably aggressive cache policy. to just 3.6s.

Cache 274

Cache Latency Infrastructure Website 274

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

High Scalability

FEBRUARY 17, 2021

This article is to simply report the YCSB bench test results in detail for five NoSQL databases namely Redis, MongoDB, Couchbase, Yugabyte and BangDB and compare the result side by side. I have also used the default six test scenarios as defined by the YCSB framework. I have restricted it to 10M records for each test.

Benchmarking 308

Benchmarking Latency C++ Database 308

Scalegrid

MARCH 23, 2020

Once authentication succeeds, it checks if it already has a cached connection for this database+user combination. Once the client disconnects, Pgpool-II has to decide whether to cache the connection: If it has an empty slot, it caches it. If it does, it returns the connection to the client. Stay tuned!

Cache 264

Cache Servers Architecture Processing 264

Dynatrace

SEPTEMBER 2, 2020

Now the application is running, let’s test it! This is what I get on my console since I have DEBUG logging enabled: And this is our service flow: And the PurePath: We can see that once the request comes in it: Gets passed to the SubredditAnalysisDetailedView (This view attempts to get the information from Redis (the cache).

Monitoring 279

Monitoring Cache Open Source Database 279

Dynatrace

JANUARY 16, 2023

Of the organizations in the Kubernetes survey, 71% run databases and caches in Kubernetes, representing a +48% year-over-year increase. Together with messaging systems (+36% growth), organizations are increasingly using databases and caches to persist application workload states.

Open Source 358

Open Source Java Operating System Programming 358

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

Dynatrace

JANUARY 31, 2024

The RAG process begins by summarizing and converting user prompts into queries that are sent to a search platform that uses semantic similarities to find relevant data in vector databases, semantic caches, or other online data sources. To observe model drift and accuracy, companies can use holdout evaluation sets for comparison to model data.

Cache 276

Cache Azure Infrastructure Monitoring 276

Smashing Magazine

FEBRUARY 12, 2025

You can see the impact of that in practice by running a global TTFB test on a website. Here, Ive tested a website thats hosted in Brazil. We get good TTFB scores when testing from Brazil and the US East Coast. However, if your content isnt dynamic, you can also cache responses at the CDN edge node.

Servers 78

Servers Latency Cache Website 78

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

DZone

OCTOBER 11, 2022

Improving testing by using real traffic from production ( Hacker News). Simpler UI Testing with CasperJS ( Architects Zone – Architectural Design Patterns & Best Practices). Simpler UI Testing with CasperJS ( Architects Zone – Architectural Design Patterns & Best Practices). Hacker News). Java EE 7 is Final.

Java 244

Java Best Practices Google Open Source 244

The Netflix TechBlog

MAY 4, 2023

This blog post will provide a detailed analysis of replay traffic testing, a versatile technique we have applied in the preliminary validation phase for multiple migration initiatives. In this testing strategy, we execute a copy (replay) of production traffic against a system’s existing and new versions to perform relevant validations.

Traffic 347

Traffic Latency Tuning Systems 347

Dynatrace

APRIL 10, 2023

” Uninterrupted testing and multicloud observability Cluster monitoring also helped the company avoid performance issues during the A/B testing it conducted to evaluate the user experience. Such testing is critical to identifying customer shopping patterns that inform decisions about application design and user experience. .

Cloud 243

Cloud Ecommerce Performance Retail 243

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 resource is cached within the browser along with the ETag value and that value is used when determining if the particular cached resource has changed remotely.

Cache 69

Cache Testing Strategy Network 69

CSS Wizardry

NOVEMBER 9, 2018

It is imperative that you test this pattern against your own specific use-case: there could be different results depending on whether or not there are large differences in file-size and execution costs between your before-CSS JavaScript file and the CSS itself. Test, test, test. Test and measure.

Network 278

Network Performance Media Cache 278

The Netflix TechBlog

OCTOBER 29, 2020

These expressions are evaluated in the current app session context, and can access data such as A/B test assignments, locality, device attributes, etc. Disk cache Of course, network connectivity may not always be available so downloaded rule sets need to be cached to disk.

Mobile 279

Mobile Cache Network Technology 279

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

Dynatrace

JANUARY 5, 2023

To prevent such a significant service disruption from happening again, we are taking several immediate and mid-term actions in addition to the existing rigorous automated testing process: Improve architectural design to eliminate SSO bottleneck risk.

Cache 246

Cache Monitoring Strategy Speed 246

The Netflix TechBlog

MAY 19, 2023

Netflix application identities are fundamentally attribute based: e.g. an instance of the Data Processor runs in eu-west-1 in the test environment with a public shard. Over time, each node caches a subset of subproblems to support a distributed cache, reduce the datastore load, and achieve SpiceDB’s horizontal scalability.

Cache 255

Cache Google Open Source Systems 255

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

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

Dynatrace

DECEMBER 23, 2020

A great opportunity to leverage the API for mobile (and custom) app management is when you deploy tested and approved apps to production. If you take great care to set up your test app environment, you can now easily make sure that it matches the production environment, and monitoring your production app with Dynatrace is no different.

Monitoring 246

Monitoring Mobile Cache Testing 246

The Netflix TechBlog

OCTOBER 16, 2019

One example displaying the need for dataset propagation: at any given time Netflix runs a very large number of A/B tests. These tests span multiple services and teams, and the operators of the tests need to be able to tweak their configuration on the fly. This powers the fallback cache used by the client as detailed above.

Cache 191

Cache Architecture Metrics Java 191

ACM Sigarch

DECEMBER 19, 2022

We assume a base multi-core processor four-way-issue load/store machine with 64-bit integer/address registers Rx, 128-bit (16-byte) data registers Vx, and an L1 D-cache that can do two operations per cycle, each reading or writing an aligned 16-byte memory word. Cache pollution is addressed in a section below.). Cache Underpinning.

Design 145

Design Systems Cache Network 145

Scalegrid

JULY 8, 2020

Here is a truncated sequence of activities as seen on Sentinel: 3) "+vote-for-leader" 4) "9096772621089bb885eaf7304a011d9f46c5689f 1" 1) "pmessage" 2) "*" 3) "+sdown" <<< master marked DOWN 4) "master test 172.31.2.48 6379" 1) "pmessage" 2) "*" 3) "+odown" 4) "master test 172.31.2.48 26379 @ test 172.31.2.48

Servers 239

Servers Database Availability Monitoring 239

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

Percona

APRIL 7, 2023

Here’s how the same test performed when running Percona Distribution for PostgreSQL 14 on these same servers: Queries: reads Queries: writes Queries: other Queries: total Transactions Latency (95th) MySQL (A) 1584986 1645000 245322 3475308 122277 20137.61 The throughput didn’t double but increased by 57%.

Tuning 145

Tuning Cache Servers Benchmarking 145

Dynatrace

JUNE 18, 2019

Moreover, features like Instant Run and the Gradle Build Cache weren’t supported. Out-of-the-box support for Instant Run and the Gradle Build Cache make the auto-instrumentation process barely noticeable. For bytecode instrumentation, we rely on a well-tested framework that’s also the foundation of the OneAgent Java module.

Cache 35

Cache Java Monitoring Tuning 35

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

The Netflix TechBlog

JULY 21, 2022

Some features (as an example) include Device Type ID, SDK Version, Buffer Sizes, Cache Capacities, UI resolution, Chipset Manufacturer and Brand. Restricting Testing and Analysis to one day and device at a time. all OOM kills with the tradeoff of lowering the performance/clearing the cache an extra 1.1%

Big Data 188

Big Data Cache Engineering Data Engineering 188

Percona

MARCH 27, 2023

A lot of useful information can be retrieved from this schema, for example, table metadata and foreign key relations, but trying to query I_S can induce performance degradation if your server is under heavy load, as shown in the following example test. The same tests have been executed in Percona Server for MySQL 5.7

Cache 124

Cache Hardware Servers Benchmarking 124

DZone

DECEMBER 30, 2020

Below are some of the key metrics that need to be monitored during performance testing: CPU utilization. Cache hit ratio. Let's take a look at some of the causes of negative impacts on performance testing and some quick resolutions that will help smooth everything out. Heap memory utilization. Number of active/daemon threads.

Servers 133

Servers Performance Cache Performance Testing 133

Percona

APRIL 6, 2023

Query caching Pgpool-II can cache frequently used queries in memory, reducing the load on your PostgreSQL servers and improving response times. This means that when a query is executed, pgpool-II can check the cache first to see if the results are already available rather than sending the query to the database server.

Cache 138

Cache Open Source Benchmarking Database 138

The Netflix TechBlog

AUGUST 10, 2020

These figures were estimated on 200 full-length titles from our catalog and have been validated through extensive A/B testing. In addition, footprint savings will allow more content to be stored in edge caches, thus contributing to an improved experience for our members. as a result of the reduction in average bitrates.

Innovation 242

Innovation Traffic Network Mobile 242

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

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

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