Problem
Consider a key-value store where values are stored with a timestamp
to designate each version. Any cluster node that handles the client request
will be able to read the latest version using the current timestamp
at the request processing
Category: Programming
Clock-Bound Wait
Emergent Leader
Solution
One of the common techniques used in peer-to-peer systems is to
order cluster nodes according to their ‘age’. The oldest member of
the cluster plays the role of the coordinator for the cluster.
The coordinator is responsible for deciding
Fixed Partitions
Partitions need to be mapped to cluster nodes.
The mapping also needs to be stored and made accessible to the clients.
It’s common to use a dedicated Consistent Core; this
handles both. The dedicated Consistent Core acts as a coordinator … Read More
Key-Range Partitions
Often it can be difficult to know what the suitable split points are
upfront.In these instances, we can implement auto-splitting.
Here, the coordinator will create only one partition with a
key range which includes all the key space.
Each partition … Read More
Request Waiting List
Solution
The cluster node maintains a waiting list which maps a key and
a callback function. The key is chosen depending on the specific
criteria to invoke the callback.
For example if it needs to be invoked whenever
a message
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