Question 1

How to set up a Hiqlite cluster in Kubernetes?

Accepted Answer

Deploy using a StatefulSet with a headless service, as shown in the README: create config secrets, apply YAML files for services and StatefulSets, and ensure volumes for data persistence. The process requires manual steps like generating encryption keys and configuring node IDs.

Question 2

Hiqlite vs Postgres for a distributed database?

Accepted Answer

Hiqlite is better for embedded Rust applications needing fast local reads and high availability without a separate server, while Postgres suits complex queries, broader ecosystem support, and client-server architectures. Hiqlite trades off some write performance for embedded simplicity.

Question 3

What's the insert performance like in Hiqlite?

Accepted Answer

Benchmarks vary by hardware: on a Ryzen 9950X with an M2 SSD, single inserts reach ~102k/s at high concurrency, but transactional inserts can hit ~710k/s. Performance is limited by disk I/O and Raft network overhead, as detailed in the performance section.

Question 4

How does automatic failover work in Hiqlite?

Accepted Answer

Uses Raft consensus for leader election: if the leader fails, other nodes automatically elect a new leader via the openraft library, ensuring continuous operation with strong consistency and minimal downtime during transitions.

Question 5

Can I use Hiqlite with non-Rust applications?

Accepted Answer

No, Hiqlite is tightly embedded in Rust and relies on Rust-specific crates like rusqlite; for non-Rust projects, you'd need to wrap it in an API server, which negates its embedded performance advantages.

Question 6

How to configure backups to S3 in Hiqlite?

Accepted Answer

Enable the 'backup' feature, set S3 credentials in the config (URL, bucket, region, key/secret), and use cron-based scheduling or manual triggers via the hiqlite::Client. Backups are encrypted locally before upload for disaster recovery.

Question 7

Is Hiqlite suitable for production with high concurrency?

Accepted Answer

Yes, but with caveats: it handles moderate workloads well, especially reads, but write concurrency is bottlenecked by SQLite's single-writer and Raft overhead; tune with features like jemalloc and monitor disk performance based on the provided benchmarks.

Hiqlite

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