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

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.

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Cache Latency Traffic Systems 235

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

DECEMBER 27, 2022

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. Latency is the time that it takes a request to be served. Availability. Define SLOs for each service. Reliability.

Software 276

Software Software Benchmarking Latency 276

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. Logging is selective to cases where the old and new responses do not match.

Traffic 349

Traffic Latency Tuning Systems 349

The Netflix TechBlog

JUNE 14, 2023

To determine customer impact, we could compare various metrics such as error rates, latencies, and time to render. The Replay Testing framework leverages the @override directive available in GraphQL Federation. The AB experiment results hinted that GraphQL’s correctness was not up to par with the legacy system. How does it work?

Traffic 358

Traffic Latency Metrics Cache 358

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.

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Lambda AWS Serverless Latency 235

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

Dynatrace

APRIL 7, 2023

Now, customers can use streamed responses to build more responsive applications by sending partial responses to clients as the response becomes available. Customers can use AWS Lambda Response Streaming to improve performance for latency-sensitive applications and return larger payload sizes. What is Lambda Response Streaming?

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Lambda AWS Serverless Latency 227

The Netflix TechBlog

SEPTEMBER 10, 2024

The other main use case was RENO, the Rapid Event Notification System mentioned above. Throughout this evolution, we’ve been able to maintain high availability and a consistent message delivery rate, with Pushy successfully maintaining 99.999% reliability for message delivery over the last few months.

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Latency Cache Tuning Efficiency 233

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.” The challenge, then, is to be able to ingest and process these events in a scalable manner, i.e., scaling with the number of devices, which will be the focus of this blog post.

Latency 224

Latency Traffic Transportation Cloud 224

All Things Distributed

JULY 14, 2015

At launch, an item’s change record is available in the stream for 24 hours after it is created. No matter which mechanism you choose to use, we make the stream data available to you instantly (latency in milliseconds) and how fast you want to apply the changes is up to you. DynamoDB Cross-region Replication. DynamoDB Triggers.

Database 159

Database Lambda AWS IoT 159

Dynatrace

FEBRUARY 4, 2021

As a discipline, SRE focuses on improving software system reliability across key categories including availability, performance, latency, efficiency, capacity, and incident response. Collaboration between developers, operations, and product owners enables site reliability engineers to define and meet uptime and availability targets.

Engineering 260

Engineering DevOps Government Latency 260

Scalegrid

OCTOBER 24, 2019

As organizations continue to migrate to the cloud, it’s important to get in front of performance issues, such as high latency, low throughput, and replication lag with higher distances between your users and cloud infrastructure. This configuration provides complete safety for your data, even in the event you lose the local SSD disks.

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AWS Latency Performance Performance Testing 183

Dynatrace

MAY 23, 2024

Stream processing systems, designed for continuous, low-latency processing, demand swift recovery mechanisms to tolerate and mitigate failures effectively. This significantly increases event latency. In Kafka Streams, a large configuration space is available for potential optimizations.

Engineering 192

Engineering Tuning Latency Open Source 192

Dynatrace

FEBRUARY 15, 2023

SREs use Service-Level Indicators (SLI) to see the complete picture of service availability, latency, performance, and capacity across various systems, especially revenue-critical systems. This is all available out-of-the-box with the default workflow template provided by Site Reliability Guardian.

DevOps 230

DevOps Latency Traffic Best Practices 230

Dynatrace

JANUARY 15, 2020

Having released this functionality in an Preview Release back in September 2019, we’re now happy to announce the General Availability of our Citrix monitoring extension. Synthetic monitoring: Citrix login availability and performance. Citrix latency represents the end-to-end “screen lag” experienced by a server’s users.

Latency 37

Latency Performance Virtualization Infrastructure 37

The Netflix TechBlog

JULY 26, 2021

From the moment a Netflix film or series is pitched and long before it becomes available on Netflix, it goes through many phases. Operational Reporting is a reporting paradigm specialized in covering high-resolution, low-latency data sets, serving detailed day-to-day activities¹ and processes of a business domain.

Big Data 258

Big Data Government Processing Analytics 258

Dynatrace

SEPTEMBER 13, 2023

Dynatrace AutomationEngine workflows automate release validation using AWS Well-Architected pillars With Dynatrace, you can create workflows that automate various tasks based on events, schedules or Davis problem triggers. Workflows are powered by a core platform technology of Dynatrace called the AutomationEngine.

AWS 259

AWS Efficiency Azure Cloud 259

Dynatrace

JUNE 1, 2023

These organizations rely heavily on performance, availability, and user satisfaction to drive sales and retain customers. Availability Availability SLO quantifies the expected level of service availability over a specific time period. Availability is typically expressed in 9’s, such as 99.9%. or 99.99% of the time.

Latency 189

Latency Website Traffic Virtualization 189

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. Every time the trigger executes, the function runs on an available resource.

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Serverless Efficiency Lambda Azure 246

The Netflix TechBlog

MARCH 10, 2023

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. After reading the asset ids using one of the ways, an event is created per asset id to be processed synchronously or asynchronously based on the use case.

Media 245

Media Traffic Processing Design 245

The Netflix TechBlog

DECEMBER 17, 2019

In databases like MySQL and PostgreSQL, transaction logs are the source of CDC events. In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Some of DBLog’s features are: Processes captured log events in-order.

Database 223

Database Traffic Transportation Open Source 223

Dynatrace

JUNE 1, 2023

These organizations rely heavily on performance, availability, and user satisfaction to drive sales and retain customers. Availability Availability SLO quantifies the expected level of service availability over a specific time period. Availability is typically expressed in 9’s, such as 99.9%. or 99.99% of the time.

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Traffic Website Latency Virtualization 173

The Netflix TechBlog

MARCH 7, 2024

These integrations are implemented through Metaflow’s extension mechanism which is publicly available but subject to change, and hence not a part of Metaflow’s stable API yet. Explainer flow is event-triggered by an upstream flow, such Model A, B, C flows in the illustration.

Systems 238

Systems Media Cache Open Source 238

Dynatrace

OCTOBER 23, 2023

Therefore, we have redesigned this extension from scratch, replacing the previously available WMI-based extension. If you run Citrix or Windows Remote Desktops on Hyper-V, have a look at the Dynatrace extensions that can provide you with holistic observability of your ecosystem on the best platform available: Dynatrace.

Efficiency 227

Efficiency Virtualization Hardware Performance 227

Dynatrace

OCTOBER 3, 2024

Without distributed tracing, pinpointing the cause of increased latency could take hours or even days. Avoid flying blind by adopting software development lifecycle events With the need for increased innovation frequency, having a clear view of the entire software development lifecycle (SDLC) is critical.

Performance 259

Performance Architecture Innovation Latency 259

Dynatrace

MAY 21, 2024

That’s because it does not require any pre-prepared schemas, and access to cold/hot storage is fully automatic and with zero latency. Dynatrace analytics capabilities, powered by hypermodal AI , enable executives to drive improved availability , strengthened security compliance , and heightened confidence in AI initiatives.

Technology 212

Technology Technology Analytics Storage 212

Dynatrace

NOVEMBER 6, 2023

By ingesting data from either cloud-native sources (such as OpenTelemetry or Kubernetes events) or what you already have instrumented (such as Open Standards), Dynatrace enriches data with context to provide a 360º view of your environment. Dynatrace enables teams to specify SLOs, such as latency, uptime, availability, and more.

Development 273

Development DevOps Programming Cloud 273

The Netflix TechBlog

APRIL 27, 2023

The fundamental idea behind Telltale is to detect anomalies on SLI metrics (for example, latency, error rates, etc). This is especially true when either the data is not available in Atlas or the query is not supported because of (say) cardinality constraints. This is one of the reasons it has taken us years to get here.

Storage 300

Storage Cache Metrics Database 300

Dynatrace

AUGUST 21, 2024

These releases often assumed ideal conditions such as zero latency, infinite bandwidth, and no network loss, as highlighted in Peter Deutsch’s eight fallacies of distributed systems. Impact of fewer resources, for example, CPU and disk, available to different services and applications.

Engineering 203

Engineering Systems Latency Metrics 203

The Netflix TechBlog

NOVEMBER 22, 2019

We’ve compiled our speaking events below so you know what we’ve been working on. In this talk, we share how Netflix deploys systems to meet its demands, Ceph’s design for high availability, and results from our benchmarking. Please stop by our “Living Room” for an opportunity to connect or reconnect with Netflixers.

AWS 38

AWS Entertainment Open Source Benchmarking 38

The Netflix TechBlog

DECEMBER 17, 2019

In databases like MySQL and PostgreSQL, transaction logs are the source of CDC events. In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Some of DBLog’s features are: Processes captured log events in-order.

Database 209

Database Traffic Transportation Open Source 209

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 174

Monitoring Latency Metrics Azure 174

The Netflix TechBlog

JULY 12, 2019

The Status-Quo Until very recently, Gatekeeper was a completely event-driven system. When a change for a video occurred in any one of its upstream systems, that system would send an event to Gatekeeper. scheduled to launch next week) would get events automatically injected into the processing queue.

Cache 184

Cache Architecture Latency Engineering 184

Dynatrace

NOVEMBER 9, 2023

Performance monitoring Dynatrace can collect performance metrics from Nutanix clusters, including latency, IOPS (Input/Output Operations Per Second), and network throughput. This helps IT teams quickly identify and troubleshoot problems, reducing downtime and ensuring the availability of critical applications.

Virtualization 206

Virtualization Storage Metrics Monitoring 206

Dynatrace

JULY 18, 2023

The screenshot below displays a workflow that listens for a deployment event of the easytrade service in the production stage. The validation process is automated based on events that occur, while the objectives’ configuration, which is validated by the Site Reliability Guardian , is stored in a separate file.

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Best Practices Code Infrastructure Latency 202