TingoDB » updates

Experimental TingoDB driver for Mongoose ODM

Sergey Korotkov — Wed, 26 Jun 2013 14:28:25 +0000

TingoDB API and features designed to be close compatible with MongoDB. As an additional proof for this concept we managed to implement experimental driver for Mongoose.js ODM libary. Work is still in progress, but basic functions work, and we hope to make it usable for real applications. For TingoDB this means that it gets a lot of additional tests from complex tool and it will help to improve its quality.

Mongoose claims to be “Elegant MongoDB object modeling for Node.js”. Now it can became the same elegant tool but for embedded javascript database.

Queries now accept $exists operator

Sergey Korotkov — Tue, 25 Jun 2013 13:09:23 +0000

It is trivial thing and we never used it. But others do, and now it is implemented. As usual it fully support indexes where appropriate. $exists operation is available starting from version 0.1.7

TingoDB now support $where clause in searches

Sergey Korotkov — Fri, 14 Jun 2013 17:06:11 +0000

Initially we didn’t implement it because it is kind of useless for in-proc implementation as you always can do any post filtering with same efficiency.

However based on user feedback we decided to implement it for compatibility purposes.

The $where clause is available starting from version 0.1.5

Index hint option now supported by TingoDB

Sergey Korotkov — Sat, 08 Jun 2013 19:34:29 +0000

While implementing our app we come to situation when multiple indexes on same collection significantly slowdown search. In our example we have collection that store information about financial transactions. To speedup app we need to maintain separate helper collection that holds links between accounts and transaction splits. This helper collection holds account and transaction ids with some derivative information like date and sum. It has indexes for both account and transaction ids. During update we use search query that include both ids and by default TingoDB tries to use both indexes. It found ranges and then intersect them. With some experimentation we found that using only single transaction id index can speedup thing a lot. This happens because transactions usually consists from few splits (usually two). So, using only one transaction index to fetch those few records with additional check of account id fields appears to be much faster that using both indexes.

Probably this is good example why MongoDB support search hint option which you can use to point exact index you want to use. So it was easy to add this support and we did it.

Hints option is available in TingoDB since version 0.1.3

Meet TingoDB, the little JavaScript brother of MongoDB

Sergey Korotkov — Fri, 31 May 2013 14:20:38 +0000

After about 3 months of work we proud to announce first public release of TingoDB.

Module is pushed to npm repository and some initial documentation is ready.

So far we successfully integrated it into our application and it works for us the same good as Mongodb.

We’ll call it here, at PushOk Software, little JavaScript brother of MongoDB.

Take a look, and give it a try !