IO River

NOVEMBER 2, 2023

With the ever-growing demands of the internet, websites and web applications face the challenge of delivering content swiftly and efficiently to users worldwide. Think of a CDN Load Balancer (or LB, if you like to keep things short and sweet) as the internet’s traffic police. But how does it decide where to send this traffic?

Traffic 40

Traffic Cache Network Servers 40

IO River

NOVEMBER 2, 2023

In technical terms, network-level firewalls regulate access by blocking or permitting traffic based on predefined rules. At its core, WAF operates by adhering to a rulebook—a comprehensive list of conditions that dictate how to handle incoming web traffic. You've put new rules in place.

Traffic 40

Traffic Network Logistics Architecture 40

The Netflix TechBlog

AUGUST 30, 2021

MQTT is an OASIS standard messaging protocol for the Internet of Things (IoT) and was designed as a highly lightweight yet reliable publish/subscribe messaging transport that is ideal for connecting remote devices with a small code footprint and minimal network bandwidth.

Latency 213

Latency Traffic Transportation Hardware 213

Brendan Gregg

SEPTEMBER 25, 2021

Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. Colleagues/Internet I love using [Linux performance tools]. CPU profile Understanding a CPU time should be easy by comparing [CPU flame graphs].

Speed 126

Speed Java AWS Virtualization 126

Brendan Gregg

SEPTEMBER 25, 2021

Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. Colleagues/Internet I love using [Linux performance tools]. CPU profile Understanding a CPU time should be easy by comparing [CPU flame graphs].

Speed 40

Speed Java AWS Virtualization 40

KeyCDN

SEPTEMBER 20, 2018

Not all back-end errors affect the user experience, but keeping track of them can prove helpful when tuning your app. DebugMe The DebugMe extension is compatible with most web browsers including Chrome, Safari, Internet Explorer, Microsoft Edge and Opera.

Strategy 67

Strategy Monitoring Website Google 67

The Netflix TechBlog

MAY 26, 2020

VPC Flow Logs VPC Flow Logs is an AWS feature that captures information about the IP traffic going to and from network interfaces in a VPC. By default, each record captures a network internet protocol (IP) traffic flow (characterized by a 5-tuple on a per network interface basis) that occurs within an aggregation interval.

Network 150

Network Tuning AWS Big Data 150

The Netflix TechBlog

FEBRUARY 18, 2022

We thus assigned a priority to each use case and sharded event traffic by routing to priority-specific queues and the corresponding event processing clusters. 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

Brendan Gregg

SEPTEMBER 5, 2017

Both Xen and KVM have had many performance and security improvements, and workloads can now be tuned to run at almost bare metal speeds (say, a 3% loss or less). The odd time we hit them, we'll take the "oops message" – a dump of the kernel stack trace and other details from the system log – and search the Internet.

Virtualization 76

Virtualization AWS Engineering Hardware 76

The Netflix TechBlog

APRIL 29, 2019

Content is placed on the network of servers in the Open Connect CDN as close to the end user as possible, improving the streaming experience for our customers and reducing costs for both Netflix and our Internet Service Provider (ISP) partners. Our Infrastructure Security team leverages Python to help with IAM permission tuning using Repokid.

Open Source 279

Open Source Network Infrastructure Big Data 279

Smashing Magazine

AUGUST 9, 2021

It’s also one of the reasons we can keep using the Internet with many concurrent users, because it smartly limits each user’s bandwidth usage to their fair share. As another example, most applications on the Internet use TCP internally to ensure that all of their data are transmitted in full. Did You Know?

Transportation 145

Transportation Internet Internet Network 145

Smashing Magazine

AUGUST 22, 2021

This is because HTTP/3 and QUIC mainly help deal with the somewhat uncommon yet potentially high-impact problems that can arise on today’s Internet. On the Internet, however, we typically have a long series of connected pipes , some of which can be wider than others (leading to so-called bottlenecks at the narrowest links).

Performance 105

Performance Network Latency Servers 105