git clone https://github.com/sfd-dev/sfd.git
cd sfd
git checkout v1.23
./configure --enable-zstd --enable-io-uring
make -j$(nproc)
sudo make install
After installation, verify the version:
sfd --version
# Expected output: sfd version 1.23 (built with zstd and io_uring)
Because of the deprecation of --legacy-ipc, you may need to update your init scripts or systemd unit files: sfd v1.23
# Old ExecStart line
ExecStart=/usr/bin/sfd --legacy-ipc --config /etc/sfd/config.json
2. Adaptive Congestion Control (ACC)
One of the most celebrated additions is the ACC algorithm. Where older versions struggled with bufferbloat, sfd v1.23 dynamically adjusts its window size based on real-time RTT (Round Trip Time) measurements. Early benchmarks show a 42% improvement in throughput on 100+ ms RTT links compared to v1.22. Story: SFD v1
Inciting Incident
The alarm was not dramatic—just a thin chime—and then a second, sharper tone when the thermal arrays spiked. A hulking refrigerated freighter had listed against the quay, its hold exhaling black smoke that tasted of burning insulation and soaked cardboard. The manifest said hazardous goods. The manifest lied like a rumor; what mattered now was the heat map contracting into a single hot heart. After installation, verify the version: sfd --version #
Mara tapped the release. SFD unfolded along preprogrammed joints, wings flexing to calibrate thrust. It lifted, an obedient shadow, and threaded the harbor's wake toward the burning hull.
Opening
Salt spray stitched the air into a haze that made the sodium lamps bleed. In the bowels of Dock 7, a maintenance bay hummed with the kind of careful silence reserved for machines that had learned to keep people alive. SFD—Serial Firefighting Drone—had been patched in three firmware upgrades and one pair of dampened servos since its commissioning two years ago. In its log it carried a name: v1.23, etched in the diagnostics banner like a scar and a reassurance.
The fleet's human operator, Mara, watched from a port glass while SFD ran a self-check. She liked the way the drone's casing reflected the harbor—bent lines of crane and container folding into the curvature like an impressionist painting. To her, SFD had begun to feel less like equipment and more like a weathered colleague.