Fjall vs SlateDB
Fjall: Log-structured, embeddable key-value engine in pure Rust with keyspaces and transactions. SlateDB: Embedded LSM storage engine that writes straight to object storage like S3.
key differences
- SlateDB is built for larger datasets (≤ 1 PB) than Fjall (≤ 10 TB).
- Only SlateDB has ttl / expiry, time travel.
choose fjall for
- +Write-heavy storage inside Rust services
- +Embedded time-series or log storage
- +Replacing RocksDB bindings in Rust code
best at · Embedded, Time-series, Metadata
choose slatedb for
- +State backends for stream processors and serverless compute
- +Metadata stores for object-storage-native systems
- +Durable logs and queues on S3
- +Embedding a KV engine in diskless containers
best at · Embedded, Streaming, Metadata
Fjall vs SlateDB: FAQ
What is the difference between Fjall and SlateDB?
Fjall: Log-structured, embeddable key-value engine in pure Rust with keyspaces and transactions. SlateDB: Embedded LSM storage engine that writes straight to object storage like S3. SlateDB is built for larger datasets (≤ 1 PB) than Fjall (≤ 10 TB). Only SlateDB has ttl / expiry, time travel.
When should I choose Fjall over SlateDB?
Choose Fjall for write-heavy storage inside Rust services, embedded time-series or log storage and replacing RocksDB bindings in Rust code. Choose SlateDB for state backends for stream processors and serverless compute; metadata stores for object-storage-native systems; and durable logs and queues on S3.
Is Fjall or SlateDB more popular?
SlateDB ranks #163 on the WhichDB Score (19.7/100) and Fjall ranks #215 (15.4/100). Popularity is not fit: check the requirements that matter for your project.
Are Fjall and SlateDB open source?
Yes. Fjall is open source. License: MIT or Apache License 2.0. Yes. SlateDB is open source. License: Apache License 2.0.