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[i am not a native english speaker, so enable quirks mode pls ...] Due to trouble in a project with long GC pauses, I just had myself a deeper look into GC details. There is not that much acessible information/benchmarks on the Web, so I thought I might share my tests and enlightments ^^. Last time I tested GC some years ago I just came to the conclusion, that allocation of any form is evil in Jav
I have recently published an article Java GC, HotSpot's CMS and heap fragmentation. Post has lead to a number of interesting discussions and here I want to present some hard numbers from my experiments to back up these discussions. Test application is a synthetic application. It is allocating byte arrays of random size and eventually releasing them (with fairly complex pattern). Though application
I have a method for getting users from a database with JDBC: public List<User> getUser(int userId) { String sql = "SELECT id, name FROM users WHERE id = ?"; List<User> users = new ArrayList<User>(); try { Connection con = DriverManager.getConnection(myConnectionURL); PreparedStatement ps = con.prepareStatement(sql); ps.setInt(1, userId); ResultSet rs = ps.executeQuery(); while(rs.next()) { users.a
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