Andrew Werner
@ajwerner.net
Building https://side-eye.io, previously worked on CockroachDB.
@alexmillerdb.bsky.social have you seen this software adaptation: github.com/cockroachdb/...? Cockroach was seeing ebs volumes that become transiently write unavailable. Folks regularly run many ebs volumes with one vm (apparently it gives a better iop/$ tradeoff with gp)
db: WAL failover to deal with transient unavailability · Issue #3230 · cockroachdb/pebble
We see transient write unavailability of block devices in the cloud (< 60s) that are sometimes detected as disk stalls resulting in node crashes. Whether the node crashes or not, this negatively im...
github.com
March 19, 2025 at 12:15 PM
@alexmillerdb.bsky.social have you seen this software adaptation: github.com/cockroachdb/...? Cockroach was seeing ebs volumes that become transiently write unavailable. Folks regularly run many ebs volumes with one vm (apparently it gives a better iop/$ tradeoff with gp)
FWIW, the intuition I was missing in that problem was the need to massively tighten the feedback loop by making smaller decisions faster to eliminate such delays, but neither book drilled that thought into me
January 4, 2025 at 5:24 PM
FWIW, the intuition I was missing in that problem was the need to massively tighten the feedback loop by making smaller decisions faster to eliminate such delays, but neither book drilled that thought into me
IIRC I preferred www.amazon.com/Feedback-Con... due to the treatment of systems with delays (which are common...)
Janert is like Z-transform is hard and out of scope, whereas
Hellerstein is like Z-transform is hard but 1st order approximation isn't and usually works sufficiently, here's an example
Janert is like Z-transform is hard and out of scope, whereas
Hellerstein is like Z-transform is hard but 1st order approximation isn't and usually works sufficiently, here's an example
Feedback Control of Computing Systems
This is the first practical treatment of the design and application of feedback control of computing systems. MATLAB files for the solution of problems and case studies accompany the text throughout. ...
www.amazon.com
January 4, 2025 at 5:22 PM
IIRC I preferred www.amazon.com/Feedback-Con... due to the treatment of systems with delays (which are common...)
Janert is like Z-transform is hard and out of scope, whereas
Hellerstein is like Z-transform is hard but 1st order approximation isn't and usually works sufficiently, here's an example
Janert is like Z-transform is hard and out of scope, whereas
Hellerstein is like Z-transform is hard but 1st order approximation isn't and usually works sufficiently, here's an example
Yugabyte uses docdb, a rocksdb fork. docs.yugabyte.com/preview/arch...
Facebook, iiuc, uses MyRocks, a rocksdb based storage engine for MySQL. engineering.fb.com/2016/08/31/c...
Facebook, iiuc, uses MyRocks, a rocksdb based storage engine for MySQL. engineering.fb.com/2016/08/31/c...
DocDB storage layer
Learn about the persistent storage layer of DocDB.
docs.yugabyte.com
December 16, 2024 at 1:42 PM
Yugabyte uses docdb, a rocksdb fork. docs.yugabyte.com/preview/arch...
Facebook, iiuc, uses MyRocks, a rocksdb based storage engine for MySQL. engineering.fb.com/2016/08/31/c...
Facebook, iiuc, uses MyRocks, a rocksdb based storage engine for MySQL. engineering.fb.com/2016/08/31/c...