Dynatrace

AUGUST 3, 2022

Typically, organizations might experience abnormal scanning activity or an unexpected traffic influx that is coming from one specific client. Log4Shell is a widespread software vulnerability that occurred in December of 2021 in Apache Log4j 2, a popular Java library for logging error messages in applications.

Java 187

Java Traffic Benchmarking Strategy 187

Dynatrace

FEBRUARY 10, 2022

WAFs protect the network perimeter and monitor, filter, or block HTTP traffic. Compared to intrusion detection systems (IDS/IPS), WAFs are focused on the application traffic. RASP solutions sit in or near applications and analyze application behavior and traffic. How to get started.

Traffic 234

Traffic Benchmarking Innovation Java 234

The Netflix TechBlog

OCTOBER 19, 2020

Our tactical approach was to use Netflix-specific libraries for collecting traces from Java-based streaming services until open source tracer libraries matured. We chose Open-Zipkin because it had better integrations with our Spring Boot based Java runtime environment.

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

The Morning Paper

MAY 23, 2019

Looking across a set of eight Java benchmarks, we find that only two of them are array dominated, the rest having between 40% to 75% of the heap footprint allocated to objects, the vast majority of which are small. Consider a B-Tree node from the B-tree Java benchmark: Uncompressed, it’s memory layout looks like (a) below.

Cache 61

Cache Benchmarking Hardware Java 61

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. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. us on Centos and 0.68

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. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. us on Ubuntu.

Speed 52

Speed Java AWS Virtualization 52

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. There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. us on Centos and 0.68

Speed 40

Speed Java AWS Virtualization 40