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Application Monitoring Research

daniel —Fri, 02/08/2019 - 4:31pm

Micrometer

  • Programming
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MySql / ORM Research

daniel —Fri, 02/08/2019 - 11:01am

Mysql enums perfomance

Guid performance

How to use the unsigned Integer in Java 8 and Java 9?

How to generate unique Long using UUID

Problems mapping UUID in JPA/hibernate

Mysql 8.0: UUID support

How to format uuid string from binary column in MySQL/MariaDB

Percona Toolkit - Duplicate key checker

Optimistic Locking in MySql

JPA Performance Benchmark

High Performance Hibernate

  • SQL
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supervisord-restarting-and-reloading

daniel —Fri, 02/08/2019 - 10:55am

Snapshot from onurguzel.com

Supervisord is a great daemon for managing application processes. However it does not have a reload option, and restart works different than we get used to. These command makes the following effects.
service supervisor restart

Restart supervisor service without making configuration changes available. It stops, and re-starts all managed applications.
supervisorctl restart

Restart application without making configuration changes available. It stops, and re-starts the application.

If you create a new configuration. None of the commands above will make it available. If you want to apply your configuration changes in both existing and new configurations, start applications in new configurations, and re-start all managed applications, you should run:
service supervisor stop
service supervisor start

If you do not want to re-start all managed applications, but make your configuration changes available, use this command:
supervisorctl reread

This command only updates the changes. It does not restart any of the managed applications, even if their configuration has changed. New application configurations cannot be started, neither. (See the “update” command below)
supervisorctl update

Restarts the applications whose configuration has changed.
Note: After the update command, new application configurations becomes available to start, but do not start automatically until the supervisor service restarts or system reboots (even if autostart option is not disabled). In order to start new application, e.g app2, simply use the following command:
supervisorctl start app2

  • Linux
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Spring Reactive / Websockets research

daniel —Fri, 02/08/2019 - 10:14am

Reactive WebSockets with Spring 5

Web on Reactive stack

  • Java
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Get all solr contents

daniel —Fri, 02/08/2019 - 10:12am

How to get all results from solr query?

  • Programming
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Programmatically fetch version of maven artifact

daniel —Fri, 02/08/2019 - 10:08am

example

  • Java
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Encrypting your maven repo password

daniel —Fri, 02/08/2019 - 10:05am

Maven password encryption

  • Build Management and Source Control
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Documenting Architecture Decisions

daniel —Fri, 02/08/2019 - 10:02am

Documenting Architecture Decisions

  • Design
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Kotlin Research

daniel —Fri, 02/08/2019 - 9:52am

From java to kotlin

Generating code via annotations in kotlin

Awesome Kotlin - curated lists of links for Kotlin

  • Java
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10 tips for failing badly at microservices

daniel —Fri, 02/08/2019 - 9:51am

10 Tips for failing badly at Microservices by David Schmitz

  • Programming
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Quotes

daniel —Thu, 08/25/2011 - 8:39pm

I figured it out. My idiot flag was set to true...

—

Daniel Bower

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