distributed systems moc
TODO: clean up after i get all my old files wrangled
A distributed system is a computer system in which multiple machines, linked by a network, work together to serve an application to users.
what makes a good distributed system?
Ideally, we want the end user to be completely oblivious to the fact that multiple machines are handling their requests.
Done right, a distributed system should, to the end user, feel the same as interacting with a single machine. To this end, the atomicity, consistency, and isolation are all necessary to ensure no weirdness happens on the users’ end.
A good distributed system should also be durable.
why are distributed systems hard to build?
Many issues arise when trying to keep multiple machines in sync across an unreliable network.
failure modes
- Fail-stop: A node stops and remains stopped, and other nodes know that it has stopped because communications remain open.
- Crash: A node silently stops, and other nodes can only guess that it has failed through communications.
- Omission: A node stops responding to incoming requests.
- Byzantine: A node starts doing random stuff, likely due to bugs or malicious actors.
table without id file.inlinks as Backlinks
where file.name = this.file.name