Better Performing Non-Logging Logger Calls in Log4j2 http://ift.tt/1jJMMVY...

Please Visit: http://ift.tt/1ajReyV

Better Performing Non-Logging Logger Calls in Log4j2
http://ift.tt/1VYhX1l
http://ift.tt/1MgbMeD

Using logging guards is a common practice when using Log4j 1.x and wanting to avoid the additional performance impact that can occur on some occasions even if the message is not actually logged. One of the most attractive fea...

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1VYhYT4
via LifeLong Community

Top 20 Online Resources to Learn Java Programming Faster and better http://ift.tt/1jJMPBh...

Please Visit: http://ift.tt/1ajReyV

Top 20 Online Resources to Learn Java Programming Faster and better
http://ift.tt/1IdT7xS

I have put down highly useful resources that may come in handy to improve your Java programming skills in one month.

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1VYhWKT
via LifeLong Community

Java 8 Stream Tutorial http://ift.tt/1qyJdPP

Please Visit: http://ift.tt/1ajReyV

Java 8 Stream Tutorial
http://ift.tt/1qyJdPP

Learn Java 8 streams by example: functional programming with filter, map, flatMap, reduce, collect, lambdas, sequential and parallel streams are covered in-depth in this tutorial.

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1QzhAUa
via LifeLong Community

Most Popular Java Questions on Stackoverflow http://ift.tt/1Lnu1Pk...

Please Visit: http://ift.tt/1ajReyV

Most Popular Java Questions on Stackoverflow
http://ift.tt/1KK4MFR

(3623 Upvotes). If I run the following program, which parses two date strings referencing times one second apart and compares them: public static void main(String[] args) throws ParseException { SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String str3 = "1927-12-31 ...

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1jrDXAF
via LifeLong Community

Twitter Snowflake - ID Generation http://ift.tt/1hHkLgB http://ift.tt/1GgAoaf...

Please Visit: http://ift.tt/1ajReyV

Twitter Snowflake - ID Generation
http://ift.tt/1hHkLgB
http://ift.tt/1Ip56xN
http://ift.tt/1GgAoah

Twitter-Snowflake算法产生的背景相当简单，为了满足Twitter每秒上万条消息的请求，每条消息都必须分配一条唯一的id，这些id还需要一些大致的顺序（方便客户端排序），并且在分布式系统中不同机器产生的id必须不同。 Snowflake算法核心 把时间戳，工作机器id，序列号组合在一起。     除了最高位bit标记为不可用以外，其余三组bit占位均可浮动，看具体的业务 ...

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1GgAoak
via LifeLong Community

JDK Compressed Oops Compressed oops is supported and enabled by default in Java SE 6u23 and later. In...

Please Visit: http://ift.tt/1ajReyV

JDK Compressed Oops
Compressed oops is supported and enabled by default in Java SE 6u23 and later. In Java SE 7, use of compressed oops is the default for 64-bit JVM processes when -Xmx isn't specified and for values of -Xmxless than 32 gigabytes. 

Elasticsearch: The Definitive Guide
Ensure that the min (Xms) and max (Xmx) sizes are the same to prevent the heap from resizing at runtime, a very costly process.
Don’t Cross 32 GB!
Give Half Your Memory to Lucene
Swapping Is the Death of Performance
http://ift.tt/L9GjBy

Tiered Compilation; Compressed Oops; Zero-Based Compressed Oops; Escape Analysis; NUMA Collector Enhancements. Tiered Compilation. Tiered compilation, introduced in Java SE 7, brings client startup speeds to the server VM. Normally, a server VM uses the interpreter to collect profiling ...

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1G73IjS
via LifeLong Community

data serialization framework http://ift.tt/1adoxHY Java’s serialization framework...

Please Visit: http://ift.tt/1ajReyV

data serialization framework
http://ift.tt/1adoxHY
Java’s serialization framework is notoriously inefficient, consuming too much CPU, RAM and size to be a suitable large scale serialization format.

kryo serialization
http://ift.tt/1AjS9Qw
http://ift.tt/1G73IjM

http://ift.tt/1adoxHY
http://ift.tt/1jC2qCI

from Public RSS-Feed of Jeffery yuan. Created with the PIXELMECHANICS 'GPlusRSS-Webtool' at http://gplusrss.com http://ift.tt/1G73IjO
via LifeLong Community