mirror of https://github.com/seald/nedb
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
2.7 KiB
52 lines
2.7 KiB
# node-embedded-db
|
|
|
|
Embedded persistent database for Node.js, with no dependency (except npm modules of course). The API is the same as MongoDB.
|
|
|
|
## Why?
|
|
I needed to store data from another project ([https://github.com/louischatriot/braindead-ci](Braindead CI)). I needed the datastore to be standalone (i.e. no dependency except other Node modules) so that people can install the software using a simple `npm install`. I couldn't find one without bugs and a clean API so I made this one.
|
|
|
|
## Installation, tests
|
|
It will be published as an npm module once it is finished. To launch tests: `npm test`.
|
|
|
|
## Performance
|
|
### Speed
|
|
It is pretty fast on the kind of datasets it was designed for (10,000 documents or less). On my machine (3 years old, no SSD), with a collection with 10,000 documents:
|
|
* An insert takes 0.1ms
|
|
* A read takes 5.7ms
|
|
* An update takes 62ms
|
|
* A deletion takes 61ms
|
|
Read, update and deletion times are pretty much non impacted by the number of concerned documents. Inserts, updates and deletions are non-blocking. Read will be soon, too (but they are so fast it is not so important anyway).
|
|
|
|
You can run the simple benchmarks I use by executing the scripts in the `benchmarks` folder. They all take an optional parameter which is the size of the dataset to use (default is 10,000).
|
|
|
|
### Memory footprint
|
|
For now, a copy of the whole database is kept in memory. For the kind of datasets expected this should not be too much (max 20MB) but I am planning on stopping using that method to free RAM and make it completely asynchronous.
|
|
|
|
## API
|
|
It's a subset of MongoDB's API.
|
|
|
|
|
|
## License
|
|
|
|
(The MIT License)
|
|
|
|
Copyright (c) 2013 Louis Chatriot <louis.chatriot@gmail.com>
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
'Software'), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|