The Netflix TechBlog

SEPTEMBER 29, 2022

Timestone: Netflix’s High-Throughput, Low-Latency Priority Queueing System with Built-in Support for Non-Parallelizable Workloads by Kostas Christidis Introduction Timestone is a high-throughput, low-latency priority queueing system we built in-house to support the needs of Cosmos , our media encoding platform. Over the past 2.5

Latency 221

Latency Systems Media Serverless 221

Dynatrace

JULY 24, 2023

They need event-driven automation that not only responds to events and triggers but also analyzes and interprets the context to deliver precise and proactive actions. These initial automation endeavors paved the way for greater advancements, leading to the next evolution of event-driven automation.

DevOps 246

DevOps Traffic Efficiency Servers 246

The Netflix TechBlog

SEPTEMBER 10, 2024

On Titus , our multi-tenant compute platform, a "noisy neighbor" refers to a container or system service that heavily utilizes the server's resources, causing performance degradation in adjacent containers. To emit a run queue latency metric, we leveraged three eBPF hooks: sched_wakeup, sched_wakeup_new, and sched_switch.

Latency 262

Latency Metrics Programming Monitoring 262

Dynatrace

JANUARY 15, 2020

Citrix is a sophisticated, efficient, and highly scalable application delivery platform that is itself comprised of anywhere from hundreds to thousands of servers. Dynatrace Extension: database performance as experienced by the SAP ABAP server. SAP server. It delivers vital enterprise applications to thousands of users.

Latency 52

Latency Performance Virtualization Infrastructure 52

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. For simpler use cases, it also represents flat key-value Maps (e.g.

Latency 260

Latency Storage Cache Servers 260

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

JUNE 14, 2023

Before GraphQL: Monolithic Falcor API implemented and maintained by the API Team Before moving to GraphQL, our API layer consisted of a monolithic server built with Falcor. A single API team maintained both the Java implementation of the Falcor framework and the API Server. To launch Phase 1 safely, we used AB Testing.

Traffic 357

Traffic Latency Metrics Cache 357

The Netflix TechBlog

MAY 4, 2023

It provides a good read on the availability and latency ranges under different production conditions. These include options where replay traffic generation is orchestrated on the device, on the server, and via a dedicated service. Also, since this logic resides on the server side, we can iterate on any required changes faster.

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Traffic Latency Tuning Systems 347

The Netflix TechBlog

NOVEMBER 3, 2022

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. We started seeing increased response latencies and leader servers running at dangerously high utilization. Let’s assume a sequence of events E?…E??,

Cache 233

Cache Latency Traffic Systems 233

Dynatrace

DECEMBER 27, 2022

In this example, “Reverse proxy” and “Front-end server” are clearly in the critical path. According to Google’s SRE handbook , best practices, there are “ Four Golden Signals ” we can convert into four SLOs for services: reliability, latency, availability, and saturation. Without them, the application won’t work.

Software 306

Software Software Benchmarking Latency 306

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. The other main use case was RENO, the Rapid Event Notification System mentioned above. Sample system diagram for an Alexa voice command.

Latency 234

Latency Cache Tuning Efficiency 234

Dynatrace

APRIL 7, 2023

Customers can use AWS Lambda Response Streaming to improve performance for latency-sensitive applications and return larger payload sizes. The difference is the owner of the Lambda function does not have to worry about provisioning and managing servers. To learn more about the AWS Lambda features, visit the Lamba features page.

Lambda 246

Lambda AWS Serverless Latency 246

Dynatrace

APRIL 5, 2021

The 2014 launch of AWS Lambda marked a milestone in how organizations use cloud services to deliver their applications more efficiently, by running functions at the edge of the cloud without the cost and operational overhead of on-premises servers. Many events can trigger a lambda function. What is AWS Lambda?

Lambda 258

Lambda AWS Serverless Hardware 258

High Scalability

JANUARY 11, 2022

When the server receives a request for an action (post, like etc.) When a user requests for feed then there will be two parallel threads involved in fetching the user feeds to optimize for latency. The entity C denotes the event where a user likes a post and entity D denotes the action when a user follows another user.

Design 334

Design Media Storage Logistics 334

Dynatrace

JANUARY 17, 2024

Cloud-based AI enables organizations to run AI in the cloud without the hassle of managing, provisioning, or housing servers. Containerization enables organizations to package AI applications and dependencies into a single unit, which can be easily deployed on any server with the necessary dependencies. Use containerization.

Strategy 288

Strategy Artificial Intelligence Storage Cloud 288

Dynatrace

JUNE 7, 2023

One of the crucial success factors for delivering cost-efficient and high-quality AI-agent services, following the approach described above, is to closely observe their cost, latency, and reliability. With these latency, reliability, and cost measurements in place, your operations team can now define their own OpenAI dashboards and SLOs.

Monitoring 241

Monitoring Latency Metrics Azure 241

Dynatrace

JUNE 25, 2020

Dynatrace Managed is intrinsically highly available as it stores three copies of all events, user sessions, and metrics across its cluster nodes. The network latency between cluster nodes should be around 10 ms or less. You can set up different proxy servers for the Mission Control uplink for each data center.

Availability 264

Availability Hardware Latency Traffic 264

Dynatrace

MAY 17, 2023

The Workflows screenshot below shows that a task is triggered by a change event related to the application, execution of the guardians, and final aggregation of the results. In this case, the four golden signals (latency, traffic, errors, and saturation) are derived from span attributes and DQL metric queries via Dynatrace Grail™.

DevOps 246

DevOps Traffic Latency Best Practices 246

Dynatrace

APRIL 25, 2023

However, serverless applications have unique characteristics that make observability more difficult than in traditional server-based applications. Serverless applications are composed of event-driven functions that run on demand in response to triggers from various sources, such as HTTP requests, messages, or timers.

Serverless 246

Serverless Lambda Azure AWS 246

Dynatrace

JANUARY 26, 2021

Unlike a traditional virtual machine-model where customers must build and manage an entire VM, serverless computing provides the ability to purchase only the CPU cycles and memory needed to support an application using an event-based pay-per-use model. When an application is triggered, it can cause latency as the application starts.

Serverless 246

Serverless Efficiency Lambda Azure 246

The Netflix TechBlog

NOVEMBER 4, 2019

By batching and parallelizing the requests to retrieve many creatives via a single query to the GraphQL server, we can optimize the index building process. Luckily, we have Kafka events that are emitted each time a piece of data changes. The first step is to listen to those events and act accordingly.

Database 246

Database Cache Servers Performance 246

Dynatrace

OCTOBER 23, 2023

Determining the root cause of these issues can be difficult when the underlying “hardware” is a virtualization software stack rather than a bare-metal server. This presents a challenge for IT operations teams, specifically in identifying and addressing performance issues or planning how to prevent future issues.

Efficiency 264

Efficiency Virtualization Hardware Performance 264

Dynatrace

MARCH 17, 2021

A single OneAgent instance can handle the monitoring of many types of entities, including servers, applications, services, databases, and more. You want to optimize your Citrix landscape with insights into user load and screen latency per server? By using these APIs, you can add metrics, events, and logs.

Metrics 243

Metrics Monitoring Network Technology 243

Dynatrace

SEPTEMBER 25, 2019

Citrix is a sophisticated, efficient, and highly scalable application delivery platform that is itself comprised of anywhere from hundreds to thousands of servers. Dynatrace Extension: database performance as experienced by the SAP ABAP server. SAP server. Dynatrace news. Dynatrace Extension: SAP ABAP platform load, by users.

Latency 164

Latency Performance Virtualization Infrastructure 164

Dynatrace

DECEMBER 15, 2022

The roles and responsibilities of ITOps team members include the following: A system administrator configures servers, installs applications, monitors the health of the system, and fixes and upgrades hardware. This includes response time, accuracy, speed, throughput, uptime, CPU utilization, and latency. Performance.

Artificial Intelligence 246

Artificial Intelligence DevOps Hardware Virtualization 246

The Morning Paper

NOVEMBER 15, 2020

Achieving 100 Gbps intrusion prevention on a single server , Zhao et al., Papers-we-love is hosting a mini-event this Wednesday (18th) where I’ll be leading a panel discussion including one of the authors of today’s paper choice: Justine Sherry. This makes the whole system latency sensitive. OSDI’20. We always want more!

Servers 128

Servers Hardware Latency Design 128

Smashing Magazine

MAY 16, 2022

Rethinking Server-Timing As A Critical Monitoring Tool. Rethinking Server-Timing As A Critical Monitoring Tool. In the world of HTTP Headers, there is one header that I believe deserves more air-time and that is the Server-Timing header. Setting Server-Timing. Sean Roberts. 2022-05-16T10:00:00+00:00.

Servers 111

Servers Monitoring Cache Network 111

Scalegrid

DECEMBER 16, 2019

We ran performance tests for MongoDB on DigitalOcean vs. AWS vs. Azure and found that DigitalOcean performance was in line with, if not better, on both high throughput and low latency in the deployment. Sharding is ideal for very large data sets or high throughput deployments that require more capacity that you can get with a single server.

Azure 187

Azure AWS Database Latency 187

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

JUNE 27, 2022

Data collected on page load events, for example, can include navigation start (when performance begins to be measured), request start (right before the user makes a request from the server), and speed index metrics (measure page load speed). connectivity, access, user count, latency) of geographic regions. Tools may be limited.

Best Practices 244

Best Practices Monitoring Wireless Traffic 244

The Netflix TechBlog

AUGUST 16, 2023

It’s built on top of Netty , using event loops for non-blocking execution of requests, one loop per core. To reduce contention among event loops, we created connection pools for each, keeping them completely independent. For example, a 16-core box connecting to an 800-server origin would have 12,800 connections.

Traffic 178

Traffic Servers Google Metrics 178

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. Log entries describe events, such as starting a process, handling an error, or simply completing some part of a workload. Here’s a closer look at logs, metrics, and distributed traces.

Monitoring 264

Monitoring Metrics DevOps Scalability 264

Dynatrace

JANUARY 31, 2024

million AI server units annually by 2027, consuming 75.4+ For production models, this provides observability of service-level agreement (SLA) performance metrics, such as token consumption, latency, availability, response time, and error count. For example, generating an image requires as much power as fully charging your smartphone.

Cache 276

Cache Azure Infrastructure Monitoring 276

Dynatrace

JUNE 26, 2024

While measuring app response time under different circumstances provides a latency value, for example, it doesn’t tell you why the app is slow, fast, or somewhere in between. These unknowns are often tied to the root cause of IT issues. Observability analytics can help teams solve for unknown unknowns. Predictive analysis.

Analytics 246

Analytics Infrastructure Metrics Efficiency 246

The Netflix TechBlog

DECEMBER 17, 2019

In databases like MySQL and PostgreSQL, transaction logs are the source of CDC events. Some of DBLog’s features are: Processes captured log events in-order. Interleaves log with dump events, by taking dumps in chunks. Hence, downstream consumers have confidence to receive change events as they occur on a source.

Database 221

Database Traffic Transportation Open Source 221

The Netflix TechBlog

DECEMBER 17, 2019

In databases like MySQL and PostgreSQL, transaction logs are the source of CDC events. Some of DBLog’s features are: Processes captured log events in-order. Interleaves log with dump events, by taking dumps in chunks. Hence, downstream consumers receive change events as they occur on a source.

Database 206

Database Traffic Transportation Open Source 206

Dynatrace

DECEMBER 22, 2021

Metrics are measures of critical system values, such as CPU utilization or average write latency to persistent storage. Logs are files that record events in a system, such as the start of a subprocess or the trapping of an error. A database could start executing a storage management process that consumes database server resources.

Artificial Intelligence 245

Artificial Intelligence Metrics Architecture DevOps 245