Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. 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. This is how Java flame graphs looked at the time.

Speed 40

Speed Java AWS Virtualization 40

The Netflix TechBlog

JUNE 14, 2023

A single API team maintained both the Java implementation of the Falcor framework and the API Server. The control group’s traffic utilized the legacy Falcor stack, while the experiment population leveraged the new GraphQL client and was directed to the GraphQL Shim. The Replay Tester tool samples raw traffic streams from Mantis.

Traffic 353

Traffic Latency Cache Metrics 353

Dynatrace

NOVEMBER 20, 2019

Typically, these shops run the z/OS operating system, but more recently, it’s not uncommon to see the Z hardware running special versions of Linux distributions. Our goal is to provide automatic answers including root-cause analysis of performance degradation across all these systems and environments.

Availability 31

Availability Hardware Java Tuning 31

Enprowess

MARCH 4, 2018

And whenever one server isn’t sufficient to serve the high traffic needs of your portal, you can scale your Liferay portal by adding additional servers. Basically when group of servers and other resources act like a single system and enable high availability is termed as “Clustering”. Users can tune these settings for their needs.

Cache 52

Cache Transportation Media Traffic 52

Dynatrace

AUGUST 8, 2019

Typically, these shops run the z/OS operating system, but more recently, it’s not uncommon to see the Z hardware running special versions of Linux distributions. Our goal is to provide automatic answers including root-cause analysis of performance degradation across all these systems and environments.

Availability 25

Availability Hardware Java Tuning 25

The Netflix TechBlog

MAY 14, 2021

However, they are scattered across multiple systems, and there isn’t an easy way to tie related messages together. You’re joining tables, resolving status types, cross-referencing data manually with other systems, and by the end of it all you ask yourself why? Things got hairy. We wanted a scalable service that was near real-time, 2.

Traffic 160

Traffic Latency Java Google 160

The Netflix TechBlog

OCTOBER 18, 2022

Due to its popularity, the number of workflows managed by the system has grown exponentially. We started seeing signs of scale issues, like: Slowness during peak traffic moments like 12 AM UTC, leading to increased operational burden. The scheduler on-call has to closely monitor the system during non-business hours.

Java 202

Java Scalability Traffic Architecture 202

The Netflix TechBlog

AUGUST 29, 2023

To improve availability, we designed systems where components could fail separately and avoid single points of failure. In order for a service to talk to another, it needs to know two things: the name of the destination service, and whether or not the traffic should be secure. First, we’ve grown the number of different IPC clients.

Traffic 220

Traffic Latency Cloud C++ 220

The Netflix TechBlog

JULY 26, 2021

This happens at an unprecedented scale and introduces many interesting challenges; one of the challenges is how to provide visibility of Studio data across multiple phases and systems to facilitate operational excellence and empower decision making. CDC events can also be sent to Data Mesh via a Java Client Producer Library.

Big Data 253

Big Data Government Analytics Processing 253

The Netflix TechBlog

DECEMBER 17, 2019

Nonetheless, we found a number of limitations that could not satisfy our requirements e.g. stalling the processing of log events until a dump is complete, missing ability to trigger dumps on demand, or implementations that block write traffic by using table locks. Blocking write traffic by locking tables. Writing events to any output.

Database 212

Database Traffic Transportation Open Source 212

The Netflix TechBlog

DECEMBER 17, 2019

Nonetheless, we found a number of limitations that could not satisfy our requirements e.g. stalling the processing of log events until a dump is complete, missing ability to trigger dumps on demand, or implementations that block write traffic by using table locks. Blocking write traffic by locking tables. Writing events to any output.

Database 197

Database Traffic Transportation Open Source 197

O'Reilly

SEPTEMBER 19, 2023

But in its early form of a Hadoop-based ML library, Mahout still required data scientists to write in Java. You can download these models to use out of the box, or employ minimal compute resources to fine-tune them for your particular task. What makes a complex system troublesome isn’t the sheer number of connections.

Hardware 99

Hardware Storage Big Data Blockchain 99