On 10/2/10 12:01 PM, Mark Engelberg wrote:
I've been using clojure with mongodb for a while now. I found that using a nosql database system was very freeing and pleasurable, compared to the python/sqlite combination I'd used before. However, I'm starting to bump up against some limitations: 1. On my 32-bit Windows machine, mongodb is quite limited on the size of the database it can manage. I've hit that limit, and can no longer add data or new indexes. 2. somnium.congomongo supports only rudimentary queries, e.g., no way to fetch while sorting on a given index. I've tried downloading and compiling a fork of congomongo that purports to support sorted queries, but couldn't get it to work. I can't pull all the data into memory to sort, because 32-bit Java supports a maximum heap size of 1600MB, which is not enough to hold all the data.
We've been using another clojure mongodb library called Karras: http://github.com/wilkes/karras So far we have been very pleased with it. It has great low-level collection support as well as a higher-level "entity" layer which sits on top of defrecord. It won't solve any of the constraints you're running up against DB wise, but it may be more flexible in terms of queries.
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