Architectural Patterns and kernels
Monolithic architecture - Exposes a high level interface where with core services closely coupled with each other. Linux and other monolithic kernels provide a high level system call API and internally, services like memory management, I/O etc are tightly coupled.
Pro: Performance
Con: Defect on one service may affect other services
Microkernel architecture - Services decoupled and run on own process. Use message passing mechanism to communicate with each other to reduce coupling.
Pro: Easy to extend or add new features. Malfunctioning service can be restarted without affecting others
Con: Slower
Hybrid kernels - Micro kernels that have non-essential code in kernel space for efficiency. Microsoft Windows NT and strains are an example
Exokernels - Provides a library for core OS features (in terms of the developer requesting particular pages of memory or blocks of diskspace). Application developer builds on top. Multiple li
If you've read the Harry Potter series of books, you would probably know what a Pensieve is... To the rest, a Pensieve is a magical device that can store one's thoughts, categorize and interlink facts for later retrieval. This blog contains my thoughts, mostly to archive what I’ve learnt, to look back later. With my being in a technical industry, expect thoughts to be inclined towards my area of work.