Abstract
At present, web-application is the most popular type of distributed systems. However, the problem of web-system optimization is still important. This paper considers the basic principles of high-loaded web-systems running and analyzes the main ways of its optimization. The methods of optimization on different levels are defined: client, server, and network. Experimental research has been conducted to explore the effectiveness of the proposed approaches. The experiments confirmed the improvement of the system characteristics. As the implementation of the optimization technique needs some resources, a research has been conducted to analyze the complexity of implementing approaches. Also the neural network has been developed that allowed to predict the results of web systems optimization.