Question 1

How do I integrate riak_dt into an existing Erlang application?

Accepted Answer

Include riak_dt as a dependency in your Erlang project, typically via rebar3 or mix for Elixir, and use its modules to implement CRDTs in your data layer. You'll need to handle network communication and persistence separately.

Question 2

What specific CRDT types does riak_dt support?

Accepted Answer

riak_dt implements state-based CRDTs as per the research paper, likely including counters, sets, and registers. For exact types, check the source code, as the README doesn't list them explicitly.

Question 3

riak_dt vs Redis CRDTs: which is better for distributed systems?

Accepted Answer

riak_dt is an Erlang library offering fine-grained control and research-backed implementations, while Redis provides built-in CRDTs with easier setup but less customization. Choose riak_dt for Erlang ecosystems needing proven correctness.

Question 4

Can I use riak_dt for real-time collaborative editing apps?

Accepted Answer

Yes, CRDTs are ideal for conflict-free collaboration, and riak_dt provides reliable implementations. However, you must build the application logic and UI around it, as it's only a data layer library.

Question 5

What are the performance trade-offs of using riak_dt?

Accepted Answer

CRDTs in riak_dt can increase memory usage and network bandwidth due to state propagation, but the Erlang implementation optimizes for concurrency. Benchmarking is recommended for latency-sensitive applications.

Question 6

Is riak_dt actively maintained?

Accepted Answer

The README indicates that the old riak_dt database is archived, but this library version is maintained as a reusable component. Check GitHub for recent activity, as it may have slower updates.

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