Virtual Memory From Addresses to Pages: The Abstraction Behind Modern Processes
Virtual memory lets each process work in a private address space while the operating system maps those addresses onto physical memory and storage.
2026-09-19
Topic Thread
#systems
4 published observations tracking this thread.
TCP vs UDP: Why the Transport Choice Changes Your Application
TCP provides a reliable ordered byte stream; UDP exposes datagrams without TCP's delivery guarantees, leaving more responsibility to the application.
2026-09-19
Processes vs Threads: What the Operating System Is Actually Managing
A process is an execution environment with its own address space; threads provide concurrent execution within a process and therefore share more state.
2026-09-19
DNS From Names to Addresses: What Actually Happens Before Your Request Arrives
Before a browser can usually contact a hostname, somebody has to resolve a name to network information. DNS makes that resolution scalable through hierarchy and caching.
2026-09-19