DZone

MAY 1, 2023

Caches are very useful software components that all engineers must know. In this article, we are going to describe what is a cache and explain specific use cases focusing on the frontend and client side. In this article, we are going to describe what is a cache and explain specific use cases focusing on the frontend and client side.

Cache 147

Cache Strategy Latency Operating System 147

High Scalability

FEBRUARY 17, 2021

We note that for MongoDB update latency is really very low (low is better) compared to other dbs, however the read latency is on the higher side. The latency table shows that 99th percentile latency for Yugabyte is quite high compared to others (lower is better). Again Yugabyte latency is quite high. Conclusion.

Benchmarking 308

Benchmarking Latency C++ Database 308

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. On a slower, higher-latency connection, the story is much, mush worse. Penalty: Caching. Myth: Cross-Domain Caching.

Cache 275

Cache Latency Infrastructure Website 275

The Netflix TechBlog

NOVEMBER 12, 2024

By: Rajiv Shringi , Oleksii Tkachuk , Kartik Sathyanarayanan Introduction In our previous blog post, we introduced Netflix’s TimeSeries Abstraction , a distributed service designed to store and query large volumes of temporal event data with low millisecond latencies. Today, we’re excited to present the Distributed Counter Abstraction.

Latency 253

Latency Cache Infrastructure Strategy 253

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. This avoids thrashing caches too much for B and evens out the pressure on the L3 caches of the machine.

Cache 260

Cache Latency Airlines Logistics 260

The Netflix TechBlog

JUNE 14, 2023

The GraphQL shim enabled client engineers to move quickly onto GraphQL, figure out client-side concerns like cache normalization, experiment with different GraphQL clients, and investigate client performance without being blocked by server-side migrations. To launch Phase 1 safely, we used AB Testing.

Traffic 358

Traffic Latency Metrics Cache 358

The Netflix TechBlog

SEPTEMBER 18, 2024

These include challenges with tail latency and idempotency, managing “wide” partitions with many rows, handling single large “fat” columns, and slow response pagination. It also serves as central configuration of access patterns such as consistency or latency targets. Useful for keeping “n-newest” or prefix path deletion.

Latency 254

Latency Storage Cache Efficiency 254

DZone

OCTOBER 4, 2023

Your team celebrates a success story where a trace identified a pesky latency issue in your application's authentication service. It turns out that the fix we made did improve performance at one point but created a situation in which key information was never cached. But the celebrations are short-lived.

Latency 254

Latency Cache Software Software 254

Dynatrace

NOVEMBER 28, 2022

The new Amazon capability enables customers to improve the startup latency of their functions from several seconds to as low as sub-second (up to 10 times faster) at P99 (the 99th latency percentile). This can cause latency outliers and may lead to a poor end-user experience for latency-sensitive applications.

Lambda 235

Lambda AWS Serverless Latency 235

High Scalability

JANUARY 11, 2022

When a user requests for feed then there will be two parallel threads involved in fetching the user feeds to optimize for latency. We will use a cache having an LRU based eviction policy for caching user feeds of active users. After that, the post gets added to the feed of all the followers in the columnar data storage.

Design 334

Design Media Storage Logistics 334

The Netflix TechBlog

SEPTEMBER 10, 2024

Dynomite is a Netflix open source wrapper around Redis that provides a few additional features like auto-sharding and cross-region replication, and it provided Pushy with low latency and easy record expiry, both of which are critical for Pushy’s workload. As Pushy’s portfolio grew, we experienced some pain points with Dynomite.

Latency 233

Latency Cache Tuning Efficiency 233

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. Being able to canary a new route let us verify latency and error rates were within acceptable limits. This meant that data that was static (e.g.

Latency 243

Latency Cache Java Traffic 243

The Netflix TechBlog

SEPTEMBER 24, 2021

Uploading and downloading data always come with a penalty, namely latency. Figure 3: Video Processing with Index and Virtual Assembly Using virtual assembly greatly improves the latency performance of the ProRes 422 HQ proxy generation by removing one round trip of cloud downloading and cloud uploading by the physical assembler.

Cloud 242

Cloud Media Storage Cache 242

CSS Wizardry

AUGUST 7, 2019

The first—and often most surprising for people to learn—thing that I want to draw your attention to is that TTFB counts one whole round trip of latency. The reason is because mobile networks are, as a rule, high latency connections. only to find that the resource they’re requesting isn’t in that PoP ’s cache.

Latency 271

Latency Ecommerce Servers Mobile 271

The Netflix TechBlog

MAY 4, 2023

It provides a good read on the availability and latency ranges under different production conditions. The upstream service calls the existing and new replacement services concurrently to minimize any latency increase on the production path. It helps expose memory leaks, deadlocks, caching issues, and other system issues.

Traffic 349

Traffic Latency Tuning Systems 349

Dynatrace

APRIL 7, 2022

Spring Boot 2 uses Micrometer as its default application metrics collector and automatically registers metrics for a wide variety of technologies, like JVM, CPU Usage, Spring MVC, and WebFlux request latencies, cache utilization, data source utilization, Rabbit MQ connection factories, and more. That’s a large amount of data to handle.

Metrics 220

Metrics Java Latency Cache 220

The Netflix TechBlog

OCTOBER 8, 2024

Rajiv Shringi Vinay Chella Kaidan Fullerton Oleksii Tkachuk Joey Lynch Introduction As Netflix continues to expand and diversify into various sectors like Video on Demand and Gaming , the ability to ingest and store vast amounts of temporal data — often reaching petabytes — with millisecond access latency has become increasingly vital.

Latency 242

Latency Storage Traffic Tuning 242

Dynatrace

MAY 13, 2022

With the Dynatrace Data Explorer, you can easily analyze metrics, such as client read/write latency by Cassandra nodes and disk space usage by keyspaces. You can also analyze table metrics, such as cache hits and misses. Provide a foundation for calculating metrics in dashboard charts.

Azure 242

Azure Latency Metrics Infrastructure 242

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.

Cache 215

Cache Azure Infrastructure Monitoring 215

The Netflix TechBlog

APRIL 27, 2023

Moreover, common database optimizations like caching recently queried data don’t really work for alerting queries because, generally speaking, the last received datapoint is required for correctness. The fundamental idea behind Telltale is to detect anomalies on SLI metrics (for example, latency, error rates, etc).

Storage 300

Storage Cache Metrics Database 300

Scalegrid

NOVEMBER 26, 2020

Redis is a great caching solution for highly demanding applications, and there are […]. In fact, it is the number one key value store and eighth most popular database in the world. It has high throughput and runs from memory, but also has the ability to persist data on disk.

Cache 130

Cache Azure Benchmarking Performance 130

InfoQ

JANUARY 29, 2024

RevenueCat extensively uses caching to improve the availability and performance of its product API while ensuring consistency. The company shared its techniques to deliver the platform, which can handle over 1.2 billion daily API requests. The team at RevenueCat created an open-source memcache client that provides several advanced features.

Cache 108

Cache Open Source Availability Performance 108

Scalegrid

JANUARY 25, 2024

Key Takeaways Critical performance indicators such as latency, CPU usage, memory utilization, hit rate, and number of connected clients/slaves/evictions must be monitored to maintain Redis’s high throughput and low latency capabilities. It can achieve impressive performance, handling up to 50 million operations per second.

Metrics 130

Metrics Monitoring Latency Cache 130

The Netflix TechBlog

JULY 12, 2019

The Tech Hollow , an OSS technology we released a few years ago, has been best described as a total high-density near cache : Total : The entire dataset is cached on each node?—?there there is no eviction policy, and there are no cache misses. Near : the cache exists in RAM on any instance which requires access to the dataset.

Cache 184

Cache Architecture Latency Engineering 184

The Netflix TechBlog

MARCH 7, 2024

Deployment: Cache To produce business value, all our Metaflow projects are deployed to work with other production systems. In other cases, it is more convenient to share the results via a low-latency API. Metaflow Hosting caches the response, so Amber can fetch it after a while.

Systems 238

Systems Media Cache Open Source 238

Dynatrace

DECEMBER 13, 2023

By monitoring metrics such as error rates, response times, and network latency, developers can identify trends and potential issues, so they don’t become critical. Load time and network latency metrics. Minimizing the number of network requests that your app makes can improve performance by reducing latency and improving load times.

Best Practices 211

Best Practices Mobile Metrics Performance 211

The Netflix TechBlog

MARCH 7, 2023

But we cannot search or present low latency retrievals from files Etc. We store all OperationIDs which are in STARTED state in a distributed cache (EVCache) for fast access during searches. Using memcache allows us to keep latencies for our search low (most of our queries are less than 100ms). This is obviously very expensive.

Media 275

Media Latency Architecture Database 275

All Things Distributed

SEPTEMBER 3, 2013

Amazon ElastiCache is a fully managed, in-memory caching service for customers to optimize the latency, performance and cost of their read workloads. We allow customers to provision the number of input and output operations (IOPS) they require by using Amazon RDS with Provisioned IOPS.

Cache 101

Cache Cloud Performance Retail 101

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 210

Latency Cache Strategy Media 210

Randon ASCII

JANUARY 12, 2022

The Xbox 360 CPU had three PowerPC cores and a 1 MB L2 cache and these features are clearly visible on the wafer. In the die picture to the right (which looks to be about 14 mm by 12 mm) you can see the regular pattern of small black rectangles in the bottom right corner – that’s the L2 cache. register files? arithmetic units?)

Cache 126

Cache Latency Benchmarking Hardware 126

Uber Engineering

JANUARY 16, 2023

Uber’s interactive analytics team shares how they integrated Alluxio’s data caching into Presto, the SQL query engine powering thousands of daily active users on petabyte scale at Uber, to dramatically reduce data scan latencies through leveraging Presto on local disks.

Cache 74

Cache Speed Latency Analytics 74

Randon ASCII

SEPTEMBER 8, 2019

The fact that this shows up as CPU time suggests that the reads were all hitting in the system cache and the CPU time was the kernel overhead (note ntoskrnl.exe on the first sampled call stack) of grabbing data from the cache. This means that there is no caching between RuntimeBroker.exe and this file.

Latency 79

Latency Cache Programming Operating System 79

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

Dynatrace

SEPTEMBER 13, 2023

The Site Reliability Guardian helps automate release validation based on SLOs and important signals that define the expected behavior of your applications in terms of availability, performance errors, throughput, latency, etc. A study by Amazon found that increasing page load time by just 100 milliseconds costs 1% in sales.

AWS 259

AWS Efficiency Azure Cloud 259

Dynatrace

APRIL 7, 2022

Spring Boot 2 uses Micrometer as its default application metrics collector and automatically registers metrics for a wide variety of technologies, like JVM, CPU Usage, Spring MVC, and WebFlux request latencies, cache utilization, data source utilization, Rabbit MQ connection factories, and more. That’s a large amount of data to handle.

Metrics 130

Metrics Java Latency Cache 130

Dynatrace

APRIL 7, 2022

Spring Boot 2 uses Micrometer as its default application metrics collector and automatically registers metrics for a wide variety of technologies, like JVM, CPU Usage, Spring MVC, and WebFlux request latencies, cache utilization, data source utilization, Rabbit MQ connection factories, and more. That’s a large amount of data to handle.

Metrics 130

Metrics Java Latency Cache 130

Dynatrace

NOVEMBER 3, 2021

For example, when monitoring a database, you’ll want to know about any latency when writing data to a disk or average query response time. Examples include a spike in memory utilization, a decrease in cache hit ratio, or an increase in CPU utilization.

Monitoring 233

Monitoring Metrics DevOps Scalability 233