Viewing profile — hubertzhang

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Snowflake also uses S3 as primary storage for OLAP workload, what's diff?

we leverage batch write optimization which uses Copy-on-write B-tree variant enables high-throughput batch writes without blocking concurrent reads. MVCC-based design eliminates lo…

Most Redis alternatives that use disk for persistence struggle with tail latency (P9999) due to background maintenance or OS filesystem overhead. We built EloqKV on a custom storag…

My reflections on the AWS us-east-1 outage. Yesterday I posted a Show HN introducing our MongoDB-compatible database EloqDoc ( https://news.ycombinator.com/item?id=45634638 ). Toda…

I cannot pull images from docker hub.

Like AWS, json is OK for me

A recent hacker-news argues: “Redis is fast — I’ll cache in Postgres.” The author benchmarks a simple API and concludes that although Redis is faster, Postgres is “fast enough,” an…

That use case aligns perfectly with EloqKV’s capabilities. In pure cache mode, batching multi-key deletions within Lua scripts can significantly reduce latency by minimizing client…

Yes, Lua in EloqKV has no such limitations. You can freely read data, generate new keys, and even query those keys within Lua scripts. Underneath, EloqKV’s transaction layer is pow…

I’m Hubert, CTO of EloqData. That’s a great question. Redis Cluster is often thought of as a distributed database, but in reality it’s not truly distributed. It relies on a smart c…

Some Redis variants focus on persistence—KVrocks, for example, or MemoryDB, which emphasizes durability through redo logs to minimize data loss. However, they are not truly transac…

Does Neki still need sharding key in query, just like Citus?

I’m the co-founder of EloqData. I recently gave a talk on EloqDoc and Pulsar integration at Data Streaming Summit 2025. It was a great event, and Ursa was definitely one of the hot…

Is Meta/X/Google open source? Is Gamil/Outlook open source? All of them gather user's data. They are all "free" software

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> It superficially sounds like a series of server processes fronting actual database servers, which sounds like another layer of partition vulnerability and points of failure I agr…

Good question! WAL and TxService(TxMap) are fully decoupled, allowing you to deploy them on the same node or across different machines. If your workload is write-intensive, you mig…

Good question! As explained in the linked article, our core technology, Data Substrate, is modular by design and requires a storage layer to handle the actual data (more precisely …

The current release is a prebuilt binary, giving users flexibility in how they use the software. The open-source model is still being decided, but a license file is included in the…

Yes, this is a top priority for us, and we aim to pass the Jepsen test before the official GA release.