IT Glossary & Dictionary

A distributed computing paradigm that processes data near the source of generation rather than in a centralized cloud data center.

An AWS service that automatically distributes incoming application traffic across multiple targets like EC2 instances and containers.

A distributed search and analytics engine built on Apache Lucene, optimized for full-text search and log analysis.

A popular log management platform combining Elasticsearch (search), Logstash (processing), and Kibana (visualization).

The process of converting readable data into an unreadable format using algorithms, reversible only with the correct key.

A built-in class for creating enumerated constants — named groups of related values that improve code readability.

The PATH variable that tells the shell which directories to search when looking for executable commands.

A dynamic value stored outside the application code that configures behavior without hardcoding sensitive or environment-specific data.

The acceptable amount of unreliability allowed for a service, calculated as 100% minus the Service Level Objective.

A data pipeline process that extracts data from sources, transforms it into a suitable format, and loads it into a destination system.

A software design pattern where components communicate by producing and consuming events rather than direct method calls.

A mechanism for managing runtime errors using try, except, else, and finally blocks to prevent program crashes.

A PostgreSQL command that shows the execution plan of a query along with actual runtime statistics for performance tuning.

A database command that shows how the query planner will execute a SQL query, revealing join methods, scan types, and estimated costs.