Storage

• Persistent Memory Programming: DAX Mappings, PMDK Libraries, Crash Consistency Without Write-Ahead Logging, and the Optane Legacy · 2021-06-14

  A deep exploration of persistent memory — how DAX enables direct byte-addressable access to non-volatile memory, how the PMDK libraries solve the crash consistency problem at the instruction level, and the lessons of Intel Optane.

• NVMe and the Storage Stack: The NVMe Command Set, Submission/Completion Queues, SPDK, and the Death of the SCSI/SATA Bottleneck · 2021-05-31

  A deep exploration of NVMe technology — how the command set and queue model eliminate the SCSI bottleneck, and why user-space storage via SPDK achieves microsecond-latency I/O on commodity flash.