Run MySQL as docker container

1. docker pull mysql

2. docker run -p 3306:3306 --name mysqlimage -e MYSQL_ROOT_PASSWORD=abc123  -d  mysql

In order to connect from MySQL workbench type one of the below IP
- localhost
- docker inspect CONTAINER_ID | grep "IPAddress"

Code review

Code Review

Best Article : https://www.processimpact.com/articles/humanizing_reviews.pdf

Detailed  : https://medium.com/palantir/code-review-best-practices-19e02780015f

Stats : https://blog.codinghorror.com/code-reviews-just-do-it/?source=post_page

Book : https://www.amazon.com/exec/obidos/ASIN/0201734850/codihorr-20

Best Practices : https://github.com/palantir/gradle-baseline/tree/develop/docs

Java 8 - Functional Interfaces

Java functional interfaces use cases :





Primitive specializations



Method reference receipt:




Reference :  Modern Java In action book

Java performance tuning

Articles

1. Simple tuning : link

2. How to write memory efficient code - Youtube video link

Notes:

* Check the current log level first
This recommendation should be obvious, but unfortunately, you can find lots of code that ignores it. Before you create a debug message, you should always check the current log level first. Otherwise, you might create a String with your log message that will be ignored afterward.

Java throubleshooting

Articles

1. Types of profiles : link , Youtube video

2. How to get high CPU usage in java(thread dump) : link 

3. Heap dump analysis, Youtube video : link

4. Article for OutOfMemmoryError : link

Some useful commands
- jps
- jmap -histo:[live] PID -> for historgram
- jmap dump : filename PID -> heap dump
  example: jmap -dump:live,format=b,file=/tmp/dump.hprof
- XX:HeapDumpOutOfMemoryError and XX:HeapDumpFileLocation $some_path