The Agile Manager

MARCH 31, 2017

Buying became an exercise in sourcing for the lowest unit cost any vendor was willing to supply for a particular skill-set. We look to process and organization, coaches and rules. We're not a few coaches and a little bit of process removed from salvation. Selling became a race to the bottom in pricing.

Innovation 40

Innovation Energy Serverless Hardware 40

Dynatrace

JUNE 27, 2022

Real user monitoring (RUM) is a performance monitoring process that collects detailed data about users’ interactions with an application. RUM, however, has some limitations, including the following: RUM requires traffic to be useful. Complex transaction and process monitoring that might have deeper dependencies.

Best Practices 179

Best Practices Monitoring Wireless Traffic 179

Percona

AUGUST 8, 2023

Or worse yet, sometimes I get questions about regaining normal operations after a traffic increase caused performance destabilization. But we can discuss common bottlenecks, how to assess them, and have a better understanding as to why proactive monitoring is so important when it comes to responding to traffic growth.

Traffic 87

Traffic Cache Monitoring Database 87

SQL Performance

JUNE 10, 2020

This month and the next I’m going to cover the physical processing aspects of derived tables. That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? And if so, is there a way to instruct SQL Server to avoid this unnesting process?

C++ 109

C++ Database Servers Code 109

SQL Server According to Bob

FEBRUARY 10, 2019

I started with a cmd file script exercising the connection path. Running along and all the sudden no traffic occurring at the SQL Server for a few seconds, then stress kicked back in. If the login was in the middle of processing pre-login the ring buffer entry may show time spent in SSL, reads, etc and the disconnect. ·

Servers 40

Servers Network Database Systems 40

Percona

DECEMBER 5, 2023

The scenario Service considerations In this exercise, we wanted to perform a major version upgrade from PostgreSQL v12.16 Then, we need a small downtime window just to move the traffic from the original instance to the upgraded one. Perform pg_upgrade Execute the pg_upgrade process. to PostgreSQL v15.4. and a v15.4.

Database 74

Database Traffic C++ Servers 74

SQL Performance

JUNE 10, 2020

This month and the next I’m going to cover the physical processing aspects of derived tables. That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? And if so, is there a way to instruct SQL Server to avoid this unnesting process?

C++ 93

C++ Database Servers Code 93

The Morning Paper

NOVEMBER 14, 2019

Taiji: managing global user traffic for large-scale internet services at the edge Xu et al., It’s another networking paper to close out the week (and our coverage of SOSP’19), but whereas Snap looked at traffic routing within the datacenter, Taiji is concerned with routing traffic from the edge to a datacenter. SOSP’19.

Traffic 42

Traffic Internet Internet Latency 42

The Agile Manager

FEBRUARY 28, 2017

For example, ghost code - code that is not commented out but will conditionally never be executed - is likely to be confused for real code in a reverse-engineering exercise. A clone of something extinct - our lost business knowledge - runs the risk of suffering severe defects. The facts are fantastic to have, but facts are not knowledge.

Strategy 40

Strategy Java Code Systems 40

Speed Curve

MARCH 5, 2023

Background For this new investigation, I selected four sites that experience a significant amount of user traffic. Fortunately, the process for identifying the low end of your site’s performance threshold is fairly straightforward. You need to look at your own real user data. (If

Performance 119

Performance C++ Metrics Ecommerce 119

Dynatrace

MAY 28, 2020

While Google’s SRE Handbook mostly focuses on the production use case for SLIs/SLOs, Keptn is “Shifting-Left” this approach and using SLIs/SLOs to enforce Quality Gates as part of your progressive delivery process. This will enable deep monitoring of those Java,NET, Node, processes as well as your web servers.

Engineering 195

Engineering Performance Metrics Best Practices 195

Speed Curve

MARCH 5, 2023

Background For this new investigation, I selected four sites that experience a significant amount of user traffic. Fortunately, the process for identifying the low end of your site’s performance threshold is fairly straightforward. You need to look at your own real user data. (If

Performance 52

Performance C++ Metrics Ecommerce 52

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Staff should be familiar with recovery processes and the behavior of the system when it’s working hard to mitigate failures. A resilient system continues to operate successfully in the presence of failures.

Latency 52

Latency Engineering Systems Hardware 52

All Things Distributed

OCTOBER 2, 2017

VPC Endpoints give you the ability to control whether network traffic between your application and DynamoDB traverses the public Internet or stays within your virtual private cloud. Performant – DynamoDB consistently delivers single-digit millisecond latencies even as your traffic volume increases.

Internet 130

Internet Internet AWS Performance 130

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Staff should be familiar with recovery processes and the behavior of the system when it’s working hard to mitigate failures. A resilient system continues to operate successfully in the presence of failures.

Latency 53

Latency Engineering Systems Hardware 53

The Morning Paper

JULY 4, 2019

They use a combination of timeouts, retries, and fallbacks to try to mitigate the effects of these failures, but these don’t get exercised as often as the happy path, so how can we be confident they’ll work as intended when called upon? If ChAP detects excessive customer impact during an experiment, the experiment is stopped immediately.

Latency 77

Latency Engineering Metrics Traffic 77

All Things Distributed

NOVEMBER 21, 2017

Amazon ElastiCache embodies much of what makes fast data a reality for customers looking to process high volume data at incredible rates, faster than traditional databases can manage. Developers love the performance, simplicity, and in-memory capabilities of Redis, making it among the most popular NoSQL key-value stores.

Games 113

Games Retail Latency Education 113

The Netflix TechBlog

OCTOBER 21, 2019

Where other systems may take over ten minutes to process metrics accurately, Mantis reduces that from tens of minutes down to seconds, effectively reducing our Mean-Time-To-Detect. Instead, we should process and serve events one at a time as they arrive. Operational use cases are inherently time sensitive by nature.

Open Source 148

Open Source Metrics Engineering Processing 148

The Netflix TechBlog

OCTOBER 21, 2019

Where other systems may take over ten minutes to process metrics accurately, Mantis reduces that from tens of minutes down to seconds, effectively reducing our Mean-Time-To-Detect. Instead, we should process and serve events one at a time as they arrive. Operational use cases are inherently time sensitive by nature.

Open Source 101

Open Source Metrics Engineering Processing 101

The Netflix TechBlog

OCTOBER 21, 2019

Where other systems may take over ten minutes to process metrics accurately, Mantis reduces that from tens of minutes down to seconds, effectively reducing our Mean-Time-To-Detect. Instead, we should process and serve events one at a time as they arrive. Operational use cases are inherently time sensitive by nature.

Open Source 100

Open Source Metrics Engineering Processing 100