(Untitled)- July 30, 2008 Network telescope A network telescope (also known as a darknet, internet motion sensor or black hole) is an internet system that allows one to observe different large-scale events taking place on the Internet. The basic idea is to observe traffic targeting the dark (unused) address-space of the network. Since all traffic to these addresses is suspicious, one can gain information about possible network attacks (random scanning worms, and DDoS backscatter) as well as other misconfigurations by...http://mekoblog.blogspot.com/2008/07/network-telescope-network-telescope.html (Untitled)- July 22, 2008 Object-relational database An object-relational database (ORD) or object-relational database management system (ORDBMS) is a database management system (DBMS) similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in database schemas and in the query language. In addition, it supports extension of the data model with custom data-types and methods.One aim for this type of system is to bridge the gap between conceptual.http://mekoblog.blogspot.com/2008/07/object-relational-database-object.html (Untitled)- July 15, 2008 Software transactional memoryIn computer science, software transactional memory (STM) is a concurrency control mechanism analogous to database transactions for controlling access to shared memory in concurrent computing. It functions as an alternative to lock-based synchronization, and is typically implemented in a lock-free way. A transaction in this context is a piece of code that executes a series of reads and writes to shared memory. These reads and writes logically occur at a single...http://mekoblog.blogspot.com/2008/07/software-transactional-memory-in.html (Untitled)- July 8, 2008 Optimization Optimization or optimality is a term that may refer to: Optimization (mathematics), trying to find maxima and minima of a function Optimization (computer science), improving a system to reduce runtime, bandwidth, memory requirements, or other property of a system; in particular o Compiler optimization, improving the performance or efficiency of compiled code Search engine optimization, in internet marketing, methodologies aimed at improving the ranking of a website.http://mekoblog.blogspot.com/2008/07/optimization-optimization-or-optimality.html (Untitled)- July 2, 2008 BlacklistingAttempts to stop spam by blacklisting sender's IP addresses still allows a small percentage through. Most IP addresses are dynamic, i.e. they are frequently changing. An ISP, or any organization directly connected to the Internet, gets a block of real Internet addresses when they register in the DNS. Within that block, they assign individual addresses to customers as needed. A dial-up customer may get a new IP address each time they connect. By the time that address appears on...http://mekoblog.blogspot.com/2008/07/blacklisting-attempts-to-stop-spam-by.html |