ramdisk.app (tyrellRD)

High-performance ephemeral scratch offloading with throttled write-behind trickle journaling for macOS.

1. Executive Summary

Modern compilation pipelines (SwiftPM, Xcode, Cargo, Rust) and AI agent logging write tens of gigabytes per hour to internal NVMe SSDs, drastically accelerating drive wear and triggering APFS lock contention. Traditional RAM disks offer pure memory speed but risk catastrophic data loss on power loss or system crash.

ramdisk.app (powered by the tyrellRD engine) solves this dilemma through intelligent, two-tier storage orchestration. By partitioning high-velocity ephemeral build objects from durable repository state, ramdisk.app offloads 85% of physical disk writes while continuously streaming modified working trees to flash via an FSEvents trickle queue capped at ≤ 10 MB/s—guaranteeing sub-2-second recovery with zero system freeze spikes.

2. Key Highlights

• 85% SSD Write Elimination: Redirects compiler object caches, intermediate linker artifacts, and agent thought logs to an ultra-fast in-memory volume (/Volumes/tyrellRD).
• Throttled Trickle Journaling: Eliminates the brutal multi-second freeze spikes of naive periodic flushes by smoothing flash writes over continuous, rate-limited trickle queues.
• Automated Memory Lifecycle: Dynamic allocation and teardown based on host memory pressure and AC power status.
• Enterprise Storage Forensics: Continuous tracking of host Terabytes Written (TBW) and SMART lifespan attributes.