dragonboat-example
memberlist
dragonboat-example | memberlist | |
---|---|---|
1 | 8 | |
171 | 3,506 | |
- | 0.7% | |
2.1 | 4.8 | |
8 months ago | 17 days ago | |
Go | Go | |
Apache License 2.0 | Mozilla Public License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
dragonboat-example
-
Is it possible to have more than 1 master available for writes in a raft system?
Yes, "joint consensus" took me a while to comprehend. If you check dragonboat examples there is one ( https://github.com/lni/dragonboat-example/tree/master/ondisk ) which shows how to perform migrations between nodes simply by copying snapshots. There are few open questions (eg. how does it scale up? does it always need to copy everything to target node first or could it be reimplemented with option for streaming?) but it looks quite promising.
memberlist
- library for gossip coordination
-
Is it possible to have more than 1 master available for writes in a raft system?
I use lightweight https://github.com/hashicorp/memberlist to build initial cluster skeleton (find out what are nodes constituting it)
-
Leaderless consensus protocol in the wild
Does https://github.com/hashicorp/memberlist count? It’s a gossip-based eventual consistency protocol based on SWIM.
-
What sort of mature, open-source libraries do you feel Rust should have but currently lacks?
An equivalent of golang's memberlist would be awesome.
-
What's the biggest outage you have ever caused?
I don't know the engineer that did it but I know what happened. There's a library that a bunch of foundational Amazon services use called DFDD. It uses a gossip protocol to handle service discovery and health checking. The open source equivalent is Hashicorp memberlist. To remove a node from the cluster, you have to send a command to an arbitrary node that says a node is dead.
-
Service discovery library in Rust?
serf uses memberlist which uses the SWIM failure detection protocol (https://www.cs.cornell.edu/projects/Quicksilver/public_pdfs/SWIM.pdf) with the Lifeguard extensions (https://arxiv.org/pdf/1707.00788.pdf).
-
Ask HN: Which are the best go repositories to read to learn the language?
https://github.com/hashicorp/memberlist
Fairly idiomatic/clean
-
A Spanner-based distributed locking library
This algorithm assumes you're doing that separately using some sort of membership protocol (e.g. SWIM), and you pass in the membership list that you are keeping up to date with that protocol. If you're curious about those, HashiCorp memberlist and HashiCorp Serf are really good to look at. I believe Consul uses those libraries under the hood.
What are some alternatives?
hashring - Consistent hashing "hashring" implementation in golang (using the same algorithm as libketama)
rust - Official implementation of the IPGen Spec in Rust
dragonboat - A feature complete and high performance multi-group Raft library in Go.
raft - raft is a golang library that provides a simple, clean, and idiomatic implementation of the Raft consensus protocol
spindle - A distributed locking library built on top of Cloud Spanner and TrueTime.
mit-6.824-distributed-systems - Template repository to work on the labs from MIT 6.824 Distributed Systems course.
LiteDB - LiteDB - A .NET NoSQL Document Store in a single data file
pjproject - PJSIP project
futures-rs - Zero-cost asynchronous programming in Rust
groupcache - groupcache is a caching and cache-filling library, intended as a replacement for memcached in many cases.
wtf - WTF Dial is an example web application written in Go.