12 May 2017

Java Muxer WLS



Go to Environment > Servers > your_Server > Tuning, under Advanced, set the Muxer Class based on your OS and reboot the server. 

Solaris/HP­UX Native Muxer : weblogic.socket.DevPollSocketMuxer 
POSIX Native Muxer : weblogic.socket.PosixSocketMuxer
Windows Native Muxer : weblogic.socket.NTSocketMuxer
Java Muxer : weblogic.socket.JavaSocketMuxer

java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)

at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87)
­ locked <0x0000000789f2b040> (a sun.nio.ch.Util$2)
­ locked <0x0000000789f2b030> (a java.util.Collections$UnmodifiableSet)
­ locked <0x0000000789f2adf8> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98)
at weblogic.socket.NIOSocketMuxer$NIOInputStream.readInternal(NIOSocketMuxer.java:815) at weblogic.socket.NIOSocketMuxer$NIOInputStream.read(NIOSocketMuxer.java:759)
at weblogic.socket.NIOSocketMuxer$NIOInputStream.read(NIOSocketMuxer.java:742)
at weblogic.socket.JSSEFilterImpl.readFromNetwork(JSSEFilterImpl.java:462)
at weblogic.socket.JSSEFilterImpl.read(JSSEFilterImpl.java:424)
at weblogic.socket.JSSESocket$JSSEInputStream.read(JSSESocket.java:64)

Catastrophic Regexp (again)

Hitting a stuck thread:
"main" prio=5 tid=0x00007fd577005800 nid=0x1c03 runnable [0x00007000035db000]
   java.lang.Thread.State: RUNNABLE
    at java.util.regex.Pattern$5.isSatisfiedBy(Pattern.java:5151)
    at java.util.regex.Pattern$5.isSatisfiedBy(Pattern.java:5151)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3694)
    at java.util.regex.Pattern$Curly.match0(Pattern.java:4158)
    at java.util.regex.Pattern$Curly.match(Pattern.java:4132)
    at java.util.regex.Pattern$Start.match(Pattern.java:3408)
    at java.util.regex.Matcher.search(Matcher.java:1199)
    at java.util.regex.Matcher.find(Matcher.java:592)
    at java.util.regex.Pattern.split(Pattern.java:1200)
    at java.lang.String.split(String.java:2313)
    at RegExpTest.main(RegExpTest.java:28)

Once again it's a "stuck" thread for the catastrophic issue in regexp:
https://github.com/devwebcl/regexp-playground/blob/master/src/main/java/cl/devweb/regexp/exploit/JxlsBug.java


09 May 2017

Software Architecture Books

List of most important of Software Architecture books:

Software Architecture in Practice (3rd Edition)
Len Bass, Paul Clements, Rick Kazman









Software Systems Architecture: Working With Stakeholders Using Viewpoints and Perspectives (2nd Edition)
Nick Rozanski, Eóin Woods


“Software Architecture: Foundations, Theory, and Practice”
R. N. Taylor, N. Medvidovic, E. M. Dashofy
https://images-na.ssl-images-amazon.com/images/I/51-zNj0gg3L._SX386_BO1,204,203,200_.jpg


Design Patterns: Elements of Reusable Object-Oriented Software
Erich Gamma, Richard Helm, Ralph Johnson y John M. Vlissides. 1994













Software Architecture for Developers
Simon Brown
 Technical leadership and the balance with agility

97 Things Every Software Architect Should Know: Collective Wisdom from the Experts
 97 Things Every Software Architect Should Know: Collective Wisdom from the Experts


The Mythical Man-Month: Essays on Software Engineering
Frederick P. Brooks Jr.
 The Mythical Man-Month: Essays on Software Engineering


Software Architecture Pattern
Mark Richards
Software Architecture Patterns


12 More Essential Skills for Software Architects
Dave Hendricksen
 12 More Essential Skills for Software Architects

Enterprise Integration Patterns
Gregor Hohpe, Bobby Woolf 
Enterprise Integration Patterns.jpg


Cracking the IT Architect Interview
Sameer Paradkar











  

Just Enough Software Architecture
George Fairbanks
https://images-na.ssl-images-amazon.com/images/I/61%2BhzVm5IoL._SX397_BO1,204,203,200_.jpg


Building Evolutionary Architectures
Neal Ford, Rebecca Parsons, Patrick Kua
https://covers.oreillystatic.com/images/0636920080237/lrg.jpg


Essential Software Architecture
Ian Gorton
Essential Software Architecture

Patterns of Enterprise Application Architecture, 1st Edition
Martin Fowler


Designing Software Architectures: A Practical Approach, 1st Edition
Humberto Cervantes , Rick Kazman


Documenting Software Architectures: Views and Beyond (2nd Edition)
Paul Clements, Felix Bachmann, Len Bass, David Garlan, James Ivers, Reed Little, Paulo Merson, Robert Nord, Judith Stafford


Clean Architecture: A Craftsman's Guide to Software Structure and Design, 1st Edition
Robert C. Martin


Thinking Architecturally
Nathaniel Schutta













37 Things One Architect Knows About IT Transformation: A Chief Architect's Journey
Gregor Hohpe



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