I've been hiding things from you, ignoring things, and sometimes lying a bit.
Today I plan to peek inside the doors I wallpapered over earlier in the semester...

1. Processors
    a. micro-ops
    b. superscalar
    c. side channels
2. Storage
    a. HDD v SSD v NVRAM
    b. hard v soft links
*    c. other storage models
        i. blobs            Amazon S3
        ii. key-value       Redis
        iii. object         MongoDB
        iv. relational      SQLite MySQL SQLServer MairaDB PostGres 
        v. ACID (atomic consistent isolated durable)
3. Containers
    a. storage
    b. serverless
4. HTTP
    a. other headers
*    b. cookies
*    c. caching
        i. client-side (Cache-Control: max-age=...)
        ii. server-side (If-Modified-Since: ...)
        iii. server-side (If-None-Match: ... and ETag: ... )
    d. websocket
    e. WebRTC
5. async
    a. stack management
*    b. event loop (Python) vs promise (JavaScript) vs implicit (vibe.d)
Data paths
Chip fabrication
Persistence on web