em3s
em3s.bsky.social
em3s
@em3s.bsky.social
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Open-sourced Actionbase — one database for likes, views, follows.

Pre-computed writes. Simple reads. 1M+ RPM at Kakao.
Currently on HBase, SlateDB planned.

github.com/kakao/actionbase
GitHub - kakao/actionbase: One database for likes, views, follows — pre-computed, served in real-time
One database for likes, views, follows — pre-computed, served in real-time - kakao/actionbase
github.com
Actionbase Stories (3): KakaoTalk Friends - CQRS Pattern
Added Actionbase as a read layer for friend relationships — without touching existing MySQL + HBase
· CDC via Debezium + Kafka
· Single schema for all query types
· Doesn't need to own data to add value
actionbase.io/stories/kakaotalk-friends/
February 4, 2026 at 2:37 PM
Reposted by em3s
Put up a SlateDB Java FFI binding PR today:

github.com/slatedb/slat...

And a WAL-based CDC PR as well:

github.com/slatedb/slat...

Community has several metadata RFCs up as well. 🚀 Some fairly big companies are evaluating it now, too!
Add FFI Java 24 `slatedb-java` bindings by criccomini · Pull Request #1253 · slatedb/slatedb
Summary This pull request introduces a new Java 24 binding for SlateDB using Java's new Foreign Function and Memory (FFM) API. The changes add a complete Gradle-based Java project (slatedb-java...
github.com
February 4, 2026 at 4:00 AM
Actionbase Stories #2: KakaoTalk Gift's recent views generate way more writes than likes or wishes.

Sync? Latency spikes, backpressure, degradation.

Instead: queue to WAL, return immediately, process async.

actionbase.io/stories/kakaotalk-gift-recent-views/
Gift - Recent Views (Async)
Async processing for high-frequency interactions
actionbase.io
February 2, 2026 at 10:04 AM
[Actionbase Stories] KakaoTalk Gift's wish list was our first Actionbase deployment.

MySQL + Spring Batch + Redis → just Actionbase.

5 stages over months. No downtime, no data loss.

WAL replay + keeping rollback paths open.

actionbase.io/stories/kakaotalk-gift-wish/
Gift - Wish (SSOT)
Migrating KakaoTalk Gift's wish list from MySQL to Actionbase
actionbase.io
January 31, 2026 at 3:09 PM
Reposted by em3s
⭐ SlateDB has just reached 2,500 stars on GitHub! Huge congrats! 🎉

Embedded storage engine built on object storage
SlateDB: Open Source Alternative to Supabase, Azure Blob Storage and Amazon S3
SlateDB is an embedded storage engine that leverages object storage for durability, scalability, and simplified replication without the need for disk management.
openalternative.co
December 2, 2025 at 8:00 PM
Open-sourced Actionbase — one database for likes, views, follows.

Pre-computed writes. Simple reads. 1M+ RPM at Kakao.
Currently on HBase, SlateDB planned.

github.com/kakao/actionbase
GitHub - kakao/actionbase: One database for likes, views, follows — pre-computed, served in real-time
One database for likes, views, follows — pre-computed, served in real-time - kakao/actionbase
github.com
January 29, 2026 at 6:08 PM
Reposted by em3s
"s2-lite is an open source, self-hostable server implementation of the S2 API. It uses SlateDB as its storage engine, which relies entirely on object storage for durability."
GitHub - s2-streamstore/s2: Durable Streams API
Durable Streams API. Contribute to s2-streamstore/s2 development by creating an account on GitHub.
github.com
January 21, 2026 at 5:51 PM