DZone

NOVEMBER 16, 2023

The circuit breaker is a design pattern that prevents cascading failures and improves the overall availability and performance of a system. A dependency can become unhealthy or unavailable for various reasons, such as network failures, high latency, timeouts, errors, or overload. What Is a Circuit Breaker?

Latency 264

Latency Network Database Monitoring 264

The Netflix TechBlog

SEPTEMBER 18, 2024

Central to this infrastructure is our use of multiple online distributed databases such as Apache Cassandra , a NoSQL database known for its high availability and scalability. It also serves as central configuration of access patterns such as consistency or latency targets.

Latency 254

Latency Storage Cache Efficiency 254

CSS Wizardry

OCTOBER 16, 2023

What is the availability, configurability, and efficacy of each? ?️ Plotted on the same horizontal axis of 1.6s, the waterfalls speak for themselves: 201ms of cumulative latency; 109ms of cumulative download. 4,362ms of cumulative latency; 240ms of cumulative download. And do any of our previous decisions dictate our options?

Cache 338

Cache Latency Strategy Speed 338

The Netflix TechBlog

JANUARY 25, 2023

The service should be able to serve real-time, aka UI, applications so CRUD and search operations should be achieved with low latency. All data should be also available for offline analytics in Hive/Iceberg. Our service will be used by a lot of internal UI applications hence the latency for CRUD and search operations must be low.

Scalability 293

Scalability Latency Media Architecture 293

CSS Wizardry

MAY 31, 2019

Every new origin we need to visit needs a connection opening, and that can be very costly: DNS resolution, TCP handshakes, and TLS negotiation all add up, and the story gets worse the higher the latency of the connection is. On a slower, higher-latency connection, the story is much, mush worse. All completely avoidable. to just 3.6s.

Cache 275

Cache Latency Infrastructure Website 275

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.

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Latency Storage Traffic Tuning 242

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

Dynatrace

MAY 23, 2024

Stream processing systems, designed for continuous, low-latency processing, demand swift recovery mechanisms to tolerate and mitigate failures effectively. We designed experimental scenarios inspired by chaos engineering. This significantly increases event latency.

Engineering 192

Engineering Tuning Latency Open Source 192

The Netflix TechBlog

NOVEMBER 3, 2022

In PACELC terms we choose PC/EC and have the same level of availability for writes of our previous system while improving our theoretical availability for reads. In that scenario, the system would need to deal with the data propagation latency directly, for example, by use of timeouts or client-originated update tracking mechanisms.

Cache 235

Cache Latency Traffic Systems 235

The Netflix TechBlog

SEPTEMBER 10, 2024

To support this growth, we’ve revisited Pushy’s past assumptions and design decisions with an eye towards both Pushy’s future role and future stability. In our case, we value low latency — the faster we can read from KeyValue, the faster these messages can get delivered.

Latency 233

Latency Cache Tuning Efficiency 233

All Things Distributed

JANUARY 18, 2012

a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications. Today is a very exciting day as we release Amazon DynamoDB , a fast, highly reliable and cost-effective NoSQL database service designed for internet scale applications. Amazon DynamoDB offers low, predictable latencies at any scale. Comments ().

Scalability 164

Scalability Database Ecommerce Latency 164

The Netflix TechBlog

MARCH 1, 2021

It supports both high throughput services that consume hundreds of thousands of CPUs at a time, and latency-sensitive workloads where humans are waiting for the results of a computation. The subsystems all communicate with each other asynchronously via Timestone, a high-scale, low-latency priority queuing system. Warm capacity.

Serverless 236

Serverless Media Latency Social Media 236

The Netflix TechBlog

SEPTEMBER 8, 2020

For each route we migrated, we wanted to make sure we were not introducing any regressions: either in the form of missing (or worse, wrong) data, or by increasing the latency of each endpoint. 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

FEBRUARY 18, 2022

Scaling Policies To address the thundering herd problem and to keep latencies under acceptable thresholds, the cluster scale-up policies are configured to be more aggressive than the scale-down policies. This approach enables the computing power to catch up quickly when the queues grow.

Systems 334

Systems Traffic Architecture Mobile 334

Dynatrace

MARCH 16, 2023

Monitors signals The first attribute of a good SLO is the ability to monitor the four “golden signals”: latency, traffic, error rates, and resource saturation. In practice, however, SLOs’ value varies significantly based on how teams design, deploy, and manage them.

DevOps 228

DevOps Latency Metrics Traffic 228

The Netflix TechBlog

MARCH 7, 2023

We designed a unique concept called Annotation Operations which allows teams to create data pipelines and easily write annotations without worrying about access patterns of their data from different applications. But we cannot search or present low latency retrievals from files Etc. This is obviously very expensive.

Media 275

Media Latency Architecture Database 275

Dynatrace

JANUARY 31, 2024

Model observability provides visibility into resource consumption and operation costs, aiding in optimization and ensuring the most efficient use of available resources. Observing AI models Running AI models at scale can be resource-intensive.

Cache 215

Cache Azure Infrastructure Monitoring 215

The Netflix TechBlog

NOVEMBER 22, 2019

December 2 1pm-2pm CMP 326-R Capacity Management Made Easy with Amazon EC2 Auto Scaling Vadim Filanovsky , Senior Performance Engineer & Anoop Kapoor, AWS Abstract :Amazon EC2 Auto Scaling offers a hands-free capacity management experience to help customers maintain a healthy fleet, improve application availability, and reduce costs.

AWS 38

AWS Entertainment Open Source Benchmarking 38

The Netflix TechBlog

AUGUST 29, 2023

Today we have a wealth of tools, both OSS and commercial, all designed for cloud-native environments. Since there were no existing solutions available, we needed to build them ourselves. To improve availability, we designed systems where components could fail separately and avoid single points of failure.

Traffic 231

Traffic Latency Cloud C++ 231

Dynatrace

SEPTEMBER 13, 2023

This is a set of best practices and guidelines that help you design and operate reliable, secure, efficient, cost-effective, and sustainable systems in the cloud. If you use AWS cloud services to build and run your applications, you may be familiar with the AWS Well-Architected framework.

AWS 259

AWS Efficiency Azure Cloud 259

Dynatrace

JUNE 7, 2023

A typical design pattern is the use of a semantic search over a domain-specific knowledge base, like internal documentation, to provide the required context in the prompt. With these latency, reliability, and cost measurements in place, your operations team can now define their own OpenAI dashboards and SLOs.

Monitoring 174

Monitoring Latency Metrics Azure 174

The Netflix TechBlog

OCTOBER 27, 2020

The data warehouse is not designed to serve point requests from microservices with low latency. Therefore, we must efficiently move data from the data warehouse to a global, low-latency and highly-reliable key-value store. How Bulldozer leverages Spark, Protobuf and KV DAL for moving the data.

Latency 254

Latency Storage Big Data Tuning 254

The Netflix TechBlog

AUGUST 30, 2021

For example, when running tests, the state of the device will change from “available for testing” to “in test.” Build a Spring @Configuration class that autowires the KafkaProperties bean injected by the Netflix Spring runtime and, using the Kafka settings available from that bean, construct an Alpakka-Kafka ConsumerSettings bean.

Latency 224

Latency Traffic Transportation Cloud 224

The Netflix TechBlog

MARCH 10, 2023

This feature support required a significant update in the data table design (which includes new tables and updating existing table columns). Data Sharding strategy in elasticsearch is updated to provide low search latency (as described in blog post) Design of new Cassandra reverse indices to support different sets of queries.

Media 245

Media Traffic Processing Design 245

Dynatrace

FEBRUARY 24, 2021

SRE is the transformation of traditional operations practices by using software engineering and DevOps principles to improve the availability, performance, and scalability of releases by building resiliency into apps and infrastructure. Designating and managing Service Level Objectives (SLOs) as availability targets for a service.

DevOps 196

DevOps Software Engineering Speed Google 196

The Netflix TechBlog

DECEMBER 21, 2020

This article will list some of the use cases of AutoOptimize, discuss the design principles that help enhance efficiency, and present the high-level architecture. These principles reduce resource usage by being more efficient and effective while lowering the end-to-end latency in data processing. Transparency to end-users.

Storage 214

Storage Latency Efficiency Data Engineering 214

The Netflix TechBlog

MARCH 7, 2024

Since its inception , Metaflow has been designed to provide a human-friendly API for building data and ML (and today AI) applications and deploying them in our production infrastructure frictionlessly. In other cases, it is more convenient to share the results via a low-latency API.

Systems 238

Systems Media Cache Open Source 238

Highly Scalable

SEPTEMBER 18, 2012

Historically, NoSQL paid a lot of attention to tradeoffs between consistency, fault-tolerance and performance to serve geographically distributed systems, low-latency or highly available applications. However, consistency is a very expensive thing in distributed systems, so it can be traded not only to availability. Consistency.

Database 213

Database Latency C++ Scalability 213

The Netflix TechBlog

NOVEMBER 2, 2021

For example, when we design a new version of VMAF, we need to effectively roll it out throughout the entire Netflix catalog of movies and TV shows. This article explains how we designed microservices and workflows on top of the Cosmos platform to bolster such video quality innovations. The workflow is initiated. 4c & 5.

Media 180

Media Innovation Metrics Latency 180

CSS Wizardry

AUGUST 13, 2019

There was no appetite from them to do so, so I decided to make it all available for free anyway—a faster web benefits everyone. Although this response has a 0B filesize, we will always take the latency hit on every single page view (and this response is basically 100% latency). Next up, we get sent to fonts.[client].com

Latency 210

Latency Cache Strategy Media 210

The Netflix TechBlog

APRIL 26, 2022

We will share how its design has evolved over the years and the lessons learned while building it. To understand Axion’s design, we need to know the various components that interact with it. These facts are managed and made available by services like viewing history or video metadata services outside of Axion.

Storage 197

Storage Design Scalability Latency 197

All Things Distributed

JULY 20, 2015

A cluster is just a pool of compute resources available to a customer’s applications. The agent is written in Go, has a minimal footprint, and is available on GitHub under an Apache license. This architecture affords Amazon ECS high availability, low latency, and high throughput because the data store is never pessimistically locked.

Latency 159

Latency Architecture AWS Open Source 159

Dynatrace

FEBRUARY 2, 2022

service availability with <50ms latency for an application with no revenue impact. For example, constant SLO violations of service availability for the check deposit application would create customer dissatisfaction leading to potential revenue impact. To avoid this, start the SLO discussion early in the design process.

DevOps 209

DevOps Metrics Best Practices Latency 209

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. Similarly, an increased throughput signifies an intensive workload on a server and a larger latency.

Metrics 130

Metrics Monitoring Latency Cache 130

High Scalability

SEPTEMBER 8, 2018

To meet user-defined goals for performance (request latency) and cost, the monitoring service tracks and adjusts resources to workload changes. This increases the cores and network bandwidth available to serve common requests. In order to implement these mechanisms, we had to make two significant changes to the design of Anna.

Storage 199

Storage Performance AWS Efficiency 199

The Netflix TechBlog

JUNE 13, 2023

By collecting and analyzing key performance metrics of the service over time, we can assess the impact of the new changes and determine if they meet the availability, latency, and performance requirements. One can perform this comparison live on the request path or offline based on the latency requirements of the particular use case.

Traffic 287

Traffic Metrics Systems Strategy 287

Dynatrace

DECEMBER 2, 2021

These can include business metrics, such as conversion rates, uptime, and availability; service metrics, such as application performance; or technical metrics, such as dependencies to third-party services, underlying CPU, and the cost of running a service. availability of a website over a year, your error budget is.05%.

Metrics 204

Metrics Best Practices DevOps Infrastructure 204