Püsivaraga

Püsivaraga is a term used in Estonian computing discourse to describe software, components, or processes that retain state across executions by using persistent storage. The phrase literally translates to “with a persistent variable,” and it is employed informally to discuss how programs remember data beyond a single run.

In practice, püsivaraga refers to stateful design where important information is saved so that it can be resumed later. This includes user progress, configuration settings, caches, and other data that must survive restarts. The concept is often contrasted with stateless designs, where no long-term data is kept between sessions and state is derived from input in each run.

Implementations of püsivaraga vary by context. Common approaches include writing to files (for example, JSON or XML configurations), using relational or NoSQL databases for structured data, or employing browser-based storage (such as localStorage) for web applications. Caching mechanisms and checkpointing strategies are also considered forms of persistence that support püsivaraga concepts. The choice of method depends on requirements for durability, performance, concurrency, and portability.

The term is not a formal standard but a descriptive label found in technical discussions, tutorials, and forums among Estonian developers. It helps differentiate between programs that keep and rely on remembered data and those that operate purely in a transient, computation-only mode. Related concepts include data persistence, stateful versus stateless architecture, and data storage strategies. See also persistence (computing) and state management.