Conceptual model of web page loading

The article discusses the conceptual model of web page loading developed by the authors. The model consists of three entities: Backend (characterized by the metrics: Page creation time, Number of SQL queries, SQL query execution time, Cache size, Page size, Number of errors) environment (characterized by the metrics: DNS, TLS, Connection, Load speed), frontend (characterized by metrics: FCP, LCP, TBT, CLS, SI). The presented conceptual model proposes to consider the process of loading a page, including all stages of its formation from the user requesting a page to rendering the received content. Its use in the process of optimizing the loading speed of a web page gives a new look at possible problems of a web project. The paper presents an example of using this model to solve the current problem of optimizing page loading speed.