dbShards and CodeFutures

Analysis of Code Futures and its flagship product dbShards. Related subjects include:

February 9, 2011

Clarification on dbShards’ shard replication

After I posted recently about dbShards, a Very Smart Commenter emailed me with the challenge “but each individual shard is still replicated via two-phase commit, and everybody knows two-phase commit is fundamentally slow.” I replied that no, it wasn’t exactly two-phase commit, but fumbled the explanation of why — so I decided to escalate straight to dbShards honcho Cory Isaacson. Read more

February 5, 2011

The Continuent Tungsten MySQL replication story

To the consternation of its then-CEO, I wrote very little about my then-client Continuent. However, when I knew Schooner’s recent announcement was coming, I reached out to other MySQL scale-out vendors too. I’ve already posted accordingly about CodeFutures (the dbShards guys) and ScaleBase. Now it’s late-responding Continuent’s turn.

Actually, what I’m mainly going to do is quote a very long email that Continuent’s current CEO/former CTO Robert Hodges sent me, and which I lightly edited.  Read more

January 25, 2011

ScaleBase, another MPP OLTP quasi-DBMS

Liran Zelkha of ScaleBase raised his hand on Twitter. It turns out ScaleBase has a story rather similar to that of CodeFutures/dbShards. That is:

Our talk didn’t get deeply technical, and I don’t know exactly how ScaleBase’s replication works. But a website reference to a small transaction log in a distributed cache does sound, while not identical to the dbShards approach, at least directionally similar.

ScaleBase is a year or so old, with about 6 people, based in the Boston area despite strong Israeli roots. ScaleBase has raised a round of venture capital; I didn’t ask for details.

Liran says that ScaleBase is in closed beta, with some production users, at least one of whom has over 100 database servers.

January 25, 2011

dbShards update

I talked yesterday with Cory Isaacson of CodeFutures, and hence can follow up on my previous post about dbShards. dbShards basics include:

One dbShards customer writes 1/2 billion rows on a busy day, and serves 3-4,000 pages per second, naturally with multiple queries per page. This is on a 32-node cluster, with uninspiring hardware, in the cloud. The database has 16 shards, aggregating 128 virtual shards. I forgot to ask how big the database actually is. Overall, dbShards is up to a dozen or so signed customers, half of whom are in production or soon will be.

dbShards’ replication scheme works like this:  Read more

August 18, 2010

I’m collecting data points on NoSQL and HVSP adoption

I was asked to do a magazine article on NoSQL, where by “NoSQL” is meant “whatever they talk about at NoSQL conferences.” By now the number of publications planning to run the article is up to 2, the deadline is next week and, crucially, it has been agreed that I may talk about HVSP in general, NoSQL and SQL alike.

It also is understood that, realistically, I can’t be expected to know and mention the very latest news for all the many products in the categories. Even so, I think this would be fine time to check just where NoSQL and HVSP adoption stand. Here is most of what I know, or links to same; it would be great if you guys would contribute additional data in the comment thread.

In the NoSQL area:  Read more

July 28, 2010

dbShards — a lot like an MPP OLTP DBMS based on MySQL or PostgreSQL

I talked yesterday w/ Cory Isaacson, who runs CodeFutures, makers of dbShards. dbShards is a software layer that turns an ordinary DBMS (currently MySQL or PostgreSQL) into an MPP shared-nothing ACID-compliant OLTP DBMS. Technical highlights included:  Read more

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