The WeakReference class, monitoring memory leak and garbage collection in a Java application

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 Below is a Stack implementation that uses an internal resizeable array structure.  public class MyStack< T > implements Stack< T > { private static final int CAPACITY = 100 ; private Object[] array ; private int pos = 0 ; public MyStack () { this . array = new Object[ CAPACITY ] ; } @Override public void push ( T item) { if ( pos >= array . length / 2 ) { Object[] newArray = new Object[ pos * 2 ] ; System. arraycopy ( array , 0 , newArray , 0 , array . length ) ; array = newArray ; } array [ pos ++] = item ; } @Override public T pop () { if (isEmpty()) { throw new RuntimeException( "empty stack" ) ; } @SuppressWarnings ( "unchecked" ) T item = ( T ) array [ pos - 1 ] ; pos -= 1 ; return item ; } @Override @SuppressWarnings ( "unchecked" ) public T peek...
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Saga Nedir?

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"Saga", Domain Driven Design ve CQRS sözkonusu olduğunda sıklıkla duyduğumuz bir kavram. Saga, birden fazla Aggregate ile ilişkili bir "long-running business transaction" konusunda bize yardımcı olan bir yapı. Saga'lar Aggregate üzerinde doğrudan bir state değişikliği yapmıyor fakat oluşturduğu Command mesajları ile dolaylı olarak state değişikliğine sebep oluyor. Sagalar aynı zamanda Command nesnelerini ele alabilir ve Event'lere abone olabilir.
Kısacası Saga, CQRS implementasyonlarında sıklıkla karşımıza çıkan ve DDD terminolojisinde ApplicationService adı verilen kavramla ilgili bir yapı.

Bir sonraki yazıda örnek bir Saga implementasyonunu paylaşıyor olalım.


Bahadır Konu
bah(dot)konu(at)gmail(dot)com

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