head to head · open source
shardingsphere vs olake
shardingsphere has 20,800 GitHub stars, 6,900 forks, 197 open issues and last shipped yesterday. olake has 1,453 stars, 252 forks, 178 open issues and last shipped yesterday. shardingsphere leads on adoption by 1,332% (20,800 vs 1,453 stars). shardingsphere is written in Java under Apache-2.0; olake is written in Go under Apache-2.0. shardingsphere has attracted 33% as many forks as stars, olake 17%. shardingsphere was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (data-pipeline, database), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| shardingsphere | olake | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 1.5K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | Go |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 6.9K | ⑂ 252 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick shardingsphere if
- You weight community size — 21K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick olake if
- You want the olake feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and olake fits your workflow better
About shardingsphere
Apache ShardingSphere is an Apache 2.0 licensed, Java based distributed database ecosystem positioned as Database Plus — a standards and enhancement layer that sits above heterogeneous databases so applications can connect to, govern, and compute across them as if they were one database, aimed at enterprise data architects and developers running sharded, multi database estates.
read the full shardingsphere overview →
About olake
OLake Go is an open source data ingestion engine written in Go and licensed under Apache 2.0. It replicates transactional databases, Apache Kafka, and S3 into Apache Iceberg or plain Parquet, and it provides a web UI and a command line interface for building scalable, real time pipelines. The project sits in the Apache Iceberg and lakehouse ecosystem, where its stated goal is to move data into vendor neutral table formats that can be read by query engines and warehouses.
read the full olake overview →
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Frequently asked questions
Is shardingsphere or olake more popular?
shardingsphere has 20,800 GitHub stars and olake has 1,453. shardingsphere has the larger community by that measure.
Are shardingsphere and olake free?
Both are open source. shardingsphere is licensed under Apache-2.0 and olake under Apache-2.0. Neither carries a licence fee.
What is the difference between shardingsphere and olake?
shardingsphere is written in Java and olake in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, shardingsphere or olake?
Choose shardingsphere if you want the larger community (20,800 stars) or its Apache-2.0 licence terms. Choose olake if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.