- Interpreter Computer ScienceAn interpreter is a program that reads high-level source code and immediately carries out the instructions, translating and executing them step‑by‑step.
- Arena Computer ScienceAn arena allocator pre-allocates a large contiguous memory region (an "arena") and doles out small allocations from it very quickly. Individual allocations aren’t freed one-by-one; the whole arena is reset or released at once, which is fast and reduces fragmentation.
- JWT SecurityA JSON Web Token (JWT) is a compact, URL-safe string that encodes readable JSON claims (e.g., user ID, roles) so clients and services can carry identity or state. Because it includes a cryptographic signature, servers can verify the token’s integrity and authenticity and accept or reject it without storing the token itself.
- Regular Expressions Fundamentals DevOpsA regular expression is a pattern of characters that describes a set of text strings. People use these patterns to find, check, or change text quickly in documents and computer programs.
- Shell FundamentalsA shell is a user interface that lets users interact with an operating system by entering commands. It parses and executes those commands, manages program execution and I/O, and often provides scripting to automate tasks.
- VCS Fundamentals DevOps Computer ScienceA Version Control System (VCS) is software that records and manages changes to files over time, enabling teams to collaborate by tracking edits, viewing history, and reverting to earlier states. It supports concurrent development through branching and merging, preserving a searchable, auditable history of the project.