aboutsummaryrefslogtreecommitdiff
path: root/src/table/replication/sharded.rs
diff options
context:
space:
mode:
Diffstat (limited to 'src/table/replication/sharded.rs')
-rw-r--r--src/table/replication/sharded.rs17
1 files changed, 10 insertions, 7 deletions
diff --git a/src/table/replication/sharded.rs b/src/table/replication/sharded.rs
index dce74b03..f2d89729 100644
--- a/src/table/replication/sharded.rs
+++ b/src/table/replication/sharded.rs
@@ -6,22 +6,25 @@ use garage_util::data::*;
use crate::replication::*;
+/// Sharded replication schema:
+/// - based on the ring of nodes, a certain set of neighbors
+/// store entries, given as a function of the position of the
+/// entry's hash in the ring
+/// - reads are done on all of the nodes that replicate the data
+/// - writes as well
#[derive(Clone)]
pub struct TableShardedReplication {
+ /// The membership manager of this node
pub system: Arc<System>,
+ /// How many time each data should be replicated
pub replication_factor: usize,
+ /// How many nodes to contact for a read, should be at most `replication_factor`
pub read_quorum: usize,
+ /// How many nodes to contact for a write, should be at most `replication_factor`
pub write_quorum: usize,
}
impl TableReplication for TableShardedReplication {
- // Sharded replication schema:
- // - based on the ring of nodes, a certain set of neighbors
- // store entries, given as a function of the position of the
- // entry's hash in the ring
- // - reads are done on all of the nodes that replicate the data
- // - writes as well
-
fn read_nodes(&self, hash: &Hash) -> Vec<UUID> {
let ring = self.system.ring.borrow().clone();
ring.walk_ring(&hash, self.replication_factor)