Entries tagged nosql
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NoSQL: What is the “best” solution for storing high volumes of structured data?
On the right setup, PostgreSQL can handle petabytes. There are also commercial vendors such as Greenplum that offer data warehouse solutions built on a modified version of PostgreSQL.
[... 80 words]How was FriendFeed’s schema less db faster than pure MySQL?
The principle reason they switched to a schemaless DB was to work around the challenges of having to make schemes changes in MySQL, which can lock the table and take hours if bit days to complete in large tables.
[... 115 words]How could we using couchbase with binary document as value?
There’s a system called cbfs that acts as a distributed blobstore on top of Couchbase server—https://github.com/couchbaselabs...—it looks like it is currently under active development.
[... 45 words]Any source available to download sample data (in 10+ GB) for testing?
Wikipedia has some pretty interesting dumps, in both XML and SQL format: http://meta.wikimedia.org/wiki/I...
[... 100 words]NoSQL: Whats the simplest on disk key-value storage?
Surprisingly there doesn’t seem to be an obvious answer to this. Here are a few options:
[... 164 words]What is the best NoSQL database to store unstructured data?
Any of the document stores are worth a look—I’d suggest investigating MongoDB, Riak and CouchDB.
[... 33 words]NoSQL: On a shared server, what are the alternatives to using SQL?
You could probably run Redis on a shared server—it doesn’t need to be installed as root, but it does require a process to run all the time which shared hosts may not allow.
[... 138 words]Benchmarks for scalability in NoSQL systems?
NoSQL systems are enormously varied which makes it hard (and not particularly constructive) to benchmark them against each other. How would you compare the performance of Redis, an in-memory data structure server, with Cassandra, a distributed redundant column store?
[... 78 words]What are the best blogs about NoSQL?
myNoSQL is excellent: http://nosql.mypopescu.com/
[... 18 words]What are the pros and cons of switching from MySQL to one of the NoSQL databases?
Pro: If your own benchmarks tell you you need to switch to a specific NoSQL solution, you’ll know exactly what the pro is.
[... 227 words]What are the advantages and disadvantages of using MongoDB vs CouchDB vs Cassandra vs Redis?
I see Redis as a different category from the other three—kind of like you wouldn’t say “what are the advantages of MySQL v.s. Memcached”. Redis makes an excellent complement to pretty much any other persistent storage mechanism. I expanded on this here: http://simonwillison.net/2009/Oc...
[... 67 words]Will Redis support per-database persistence configuration?
I don’t know if that’s on the roadmap (you’d need to ask antirez on the mailing list or Twitter), but it should be easy enough to run multiple Redis instances with different settings—especially on a multi core machine.
[... 52 words]What is the largest production deployment of CouchDB for online use?
The BBC have a pretty big CouchDB cluster, which they use mostly as a replicated key-value store. It’s used by their new identity platform which includes customisation features for iPlayer.
[... 47 words]Comprehensive notes from my three hour Redis tutorial
Last week I presented two talks at the inaugural NoSQL Europe conference in London. The first was presented with Matthew Wall and covered the ways in which we have been exploring NoSQL at the Guardian. The second was a three hour workshop on Redis, my favourite piece of software to have the NoSQL label applied to it.
[... 263 words]Crowdsourced document analysis and MP expenses
As you may have heard, the UK government released a fresh batch of MP expenses documents a week ago on Thursday. I spent that week working with a small team at Guardian HQ to prepare for the release. Here’s what we built:
[... 2081 words]Node.js is genuinely exciting
I gave a talk on Friday at Full Frontal, a new one day JavaScript conference in my home town of Brighton. I ended up throwing away my intended topic (JSONP, APIs and cross-domain security) three days before the event in favour of a technology which first crossed my radar less than two weeks ago.
[... 2009 words]