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 239

Latency Storage Traffic Tuning 239

The Netflix TechBlog

MARCH 5, 2024

Reduced tail latencies In both our GRPC and DGS Framework services, GC pauses are a significant source of tail latencies. That’s particularly true of our GRPC clients and servers, where request cancellations due to timeouts interact with reliability features such as retries, hedging and fallbacks.

Latency 237

Latency Java Tuning Efficiency 237

The Netflix TechBlog

SEPTEMBER 10, 2024

By Karthik Yagna , Baskar Odayarkoil , and Alex Ellis Pushy is Netflix’s WebSocket server that maintains persistent WebSocket connections with devices running the Netflix application. In our case, we value low latency — the faster we can read from KeyValue, the faster these messages can get delivered.

Latency 234

Latency Cache Tuning Efficiency 234

Dynatrace

MAY 17, 2023

In this case, the four golden signals (latency, traffic, errors, and saturation) are derived from span attributes and DQL metric queries via Dynatrace Grail™. Based on those insights, they implemented automated validation tasks, and shifted left in their software delivery pipeline.

DevOps 246

DevOps Traffic Latency Best Practices 246

Scalegrid

OCTOBER 17, 2019

Using a connection pool in each module is hardly efficient: Even with a relatively small number of modules, and a small pool size in each, you end up with a lot of server processes. You either need an extra server (or 3), or your database server(s) must have enough resources to support a connection pooler, in addition to PostgreSQL.

Architecture 200

Architecture Database Latency Servers 200

SQL Performance

SEPTEMBER 17, 2019

Many database administrators find themselves having to support instances of SQL Server Reporting Services (SSRS), or at least the backend databases that are required for SSRS. This article will cover many areas that database administrators need to be aware of in order to properly license, recover, and tune a Reporting Services installation.

Tuning 67

Tuning Servers Database Best Practices 67

Dynatrace

APRIL 25, 2023

However, serverless applications have unique characteristics that make observability more difficult than in traditional server-based applications. Serverless applications have several benefits over server-based applications: Eliminate the need to provision, manage and maintain servers or containers.

Serverless 246

Serverless Lambda Azure AWS 246

Dynatrace

JANUARY 26, 2021

Within this paradigm, it is possible to run entire architectures without touching a traditional virtual server, either locally or in the cloud. When an application is triggered, it can cause latency as the application starts. Unlike on-premises machines, shared servers, or rented virtual machines, there is no cost for downtime.

Serverless 246

Serverless Efficiency Lambda AWS 246

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 235

Serverless Media Latency Social Media 235

The Netflix TechBlog

AUGUST 22, 2019

The canary stage will determine a score based on metrics such as CPU, threads, latency, and GC pauses. Running a canary for each change and testing the AMI in production allows us to capture insights around impact on Windows updates, script changes, tuning web server configuration, among others.

DevOps 210

DevOps AWS Tuning Infrastructure 210

The Netflix TechBlog

FEBRUARY 18, 2022

To this end, we developed a Rapid Event Notification System (RENO) to support use cases that require server initiated communication with devices in a scalable and extensible manner. This separation allows us to tune system configuration and scaling policies independently for different event priorities and traffic patterns.

Systems 334

Systems Traffic Architecture Mobile 334

Percona

APRIL 7, 2023

If we were to select the most important MySQL setting, if we were given a freshly installed MySQL or Percona Server for MySQL and could only tune a single MySQL variable, which one would it be? Sysbench ran on a third server, which I’ll refer to as the application server (APP).

Tuning 145

Tuning Cache Servers Benchmarking 145

Dynatrace

MAY 17, 2023

Think about items such as general system metrics (for example, CPU utilization, free memory, number of services), the connectivity status, details of our web server, or even more granular in-application tasks like database queries. Let’s click “Apache Web Server apache” now.

Metrics 243

Metrics Database Monitoring Network 243

Dynatrace

APRIL 26, 2022

STM generates traffic that replicates the typical path or behavior of a user on a network to measure performance for example, response times, availability, packet loss, latency, jitter, and other variables). PC, smartphone, server) or virtual (virtual machines, cloud gateways). Endpoints can be physical (i.e.,

Monitoring 246

Monitoring Social Media IoT Metrics 246

InfoQ

JANUARY 26, 2024

Discord optimized its platform to serve over one million online users in a single server while maintaining a responsive user experience. By Rafal Gancarz

Servers 107

Servers Tuning Scalability Performance 107

Dynatrace

JULY 24, 2023

It enables them to adapt to user feedback swiftly, fine-tune feature releases, and deliver exceptional user experiences, all while maintaining control and minimizing disruption. Using advanced causal AI and context-aware decision-making, it identifies the root cause behind server failures.

DevOps 246

DevOps Traffic Efficiency Servers 246

Scalegrid

JANUARY 25, 2024

You will need to know which monitoring metrics for Redis to watch and a tool to monitor these critical server metrics to ensure its health. Understanding Redis Performance Indicators Redis is designed to handle high traffic and low latency with its in-memory data store and efficient data structures.

Metrics 130

Metrics Monitoring Latency Cache 130

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. They enable us to further fine-tune and configure the system, ensuring the new changes are integrated smoothly and seamlessly.

Traffic 285

Traffic Metrics Systems Strategy 285

Percona

MARCH 23, 2023

Hardware Memory The amount of RAM to be provisioned for database servers can vary greatly depending on the size of the database and the specific requirements of the company. Some servers may need a few GBs of RAM, while others may need hundreds of GBs or even terabytes of RAM. If you see concurrency issues, you can tune this variable.

Performance 144

Performance Hardware Tuning Storage 144

Percona

APRIL 13, 2023

In PostgreSQL, replication lag can occur due to various reasons such as network latency, slow disk I/O, long-running transactions, etc. Replication lag can occur due to various reasons, such as: Network latency: Network latency is the delay caused by the time it takes for data to travel between the primary and standby databases.

Latency 103

Latency Tuning Open Source Network 103

The Netflix TechBlog

AUGUST 29, 2023

IPC clients are instantiated targeting that VIP or SVIP, and the Eureka client code handles the translation of that VIP to a set of IP and port pairs by fetching them from the Eureka server. There is a downside to fetching this data on-demand: this adds latency to the first request to a cluster.

Traffic 229

Traffic Latency Cloud C++ 229

KeyCDN

NOVEMBER 4, 2021

The POP is strategially located within the country and lowers latency overall. KeyCDN is always on the lookout for ways to minimize latency and accelerate asset delivery worldwide. For more POPs planned, check our current network for a list of both active and planned edge server locations. Hola Mexico!

Latency 111

Latency Cache Tuning Traffic 111

KeyCDN

MARCH 10, 2021

With Tel Aviv being the technology capital of Israel, it's the ideal edge server location. The image below shows a significant drop in latency once we've launched the new point of presence in Israel. In fact, latency has been reduced by almost 50%! Performance report Brisbane - Australia Brisbane is our 4th POP in Australia.

Latency 110

Latency Internet Internet Speed 110

Smashing Magazine

NOVEMBER 8, 2021

As developers, we rightfully obsess about the customer experience, relentlessly working to squeeze every millisecond out of the critical rendering path, optimize input latency, and eliminate jank. Hydrogen fuels dynamic commerce by uniting React Server Components, streaming server-side rendering, and smart caching controls.

Cache 139

Cache Best Practices Strategy Servers 139

Percona

MAY 1, 2023

I’ll show you some MySQL settings to tune to get better performance, and cost savings, with AWS RDS. After some time of receiving these messages, eventually, they hit performance issues to the point that the server becomes unresponsive for a few minutes. This was exactly what was happening on this server.

AWS 135

AWS Hardware Storage Tuning 135

Percona

NOVEMBER 3, 2023

PostgreSQL Cluster One coordinator node citus-coord-01 Three worker nodes citus1 citus2 citus3 Hardware AWS Instance Ubuntu Server 20.04, SSD volume type 64-bit (x86) c5.xlarge Steps Provisioning The first step is to provision the four nodes with both PostgreSQL and Citus. psql pgbench <<_eof1_ qecho adding node citus3.

Database 114

Database Benchmarking Latency C++ 114

Scalegrid

AUGUST 27, 2024

The software also extends capabilities allowing fine-tuning consumption parameters through QoS (Quality of Service) prefetch limits catered toward balancing load among numerous consumers, thus preventing overwhelming any single consumer entity. RabbitMQ ensures that this data exchange is smooth and uninterrupted across different platforms.

IoT 130

IoT Ecommerce Games Scalability 130

Percona

SEPTEMBER 1, 2023

While there is no magic bullet for MySQL performance tuning, there are a few areas that can be focused on upfront that can dramatically improve the performance of your MySQL installation. What are the Benefits of MySQL Performance Tuning? A finely tuned database processes queries more efficiently, leading to swifter results.

Tuning 52

Tuning Database Performance Hardware 52

The Netflix TechBlog

JULY 21, 2022

device characteristics come from our on-field knowledge and runtime memory data comes from real-time user data pushed to our servers. Stay tuned for further posts on memory management and the use of ML modeling to deal with systemic and low latency data collected at the device level.

Big Data 188

Big Data Cache Engineering Data Engineering 188

All Things Distributed

OCTOBER 2, 2017

percent availability in the event of a server, a rack of servers, or an Availability Zone failure. DynamoDB automatically re-distributes your data to healthy servers to ensure there are always multiple replicas of your data without you needing to intervene.

Internet 110

Internet Internet AWS Performance 110

The Netflix TechBlog

DECEMBER 17, 2019

Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low. Stay Tuned DBLog has additional capabilities which are not covered by this blog post, such as: Ability to capture table schemas without using locks.

Database 221

Database Traffic Transportation Open Source 221

The Netflix TechBlog

DECEMBER 17, 2019

Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low. Stay Tuned DBLog has additional capabilities which are not covered by this blog post, such as: Ability to capture table schemas without using locks.

Database 206

Database Traffic Transportation Open Source 206

The Netflix TechBlog

FEBRUARY 9, 2021

The action corresponds to the button on the page and the withFields specify which fields the server expects to have sent back when the button is clicked. Stay tuned for more details on this, as well as more details on the internals of the new SKU Platform in one of our upcoming blog posts. Step 3 & 4?—?Determine

Engineering 145

Engineering Scalability Architecture Innovation 145

KeyCDN

JANUARY 25, 2023

With a dedicated POP, latency for visitors is reduced even further, resulting in better loading times. This makes Dublin the ideal location for an edge server. How to check a POP location Each edge server adds the HTTP response header X-Edge-Location delivered by KeyCDN. Lima - Peru Lima is our 6th POP in Latin America.

Latency 60

Latency Cache Tuning Speed 60

Smashing Magazine

AUGUST 9, 2021

You’ve probably heard things like: “HTTP/3 is much faster than HTTP/2 when there is packet loss”, or “HTTP/3 connections have less latency and take less time to set up”, and probably “HTTP/3 can send data more quickly and can send more resources in parallel”. Websites would magically become 50% faster with the flip of a switch!

Transportation 145

Transportation Internet Internet Network 145

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. This server is spending about a third of its CPU cycles just checking the time! I've shared many posts about superpower observability tools, but often humble hacking is just as effective. 30.14% in the middle of the flame graph.

Speed 103

Speed Java AWS Virtualization 103

Smashing Magazine

SEPTEMBER 6, 2021

Next, we’ll look at how to set up servers and clients (that’s the hard part unless you’re using a content delivery network (CDN)). This difference by itself doesn’t do all that much (it mainly reduces the overhead on the server-side), but it leads to most of the following points. Server Sharding and Connection Coalescing.

Network 120

Network Servers Cache Traffic 120