I am working on scalable web application.I am planning to use LDAP for login authentication purpose. I am new to LDAP when I search about it I found two important implementations:
I search about performance comparison between two but i found very confusing benchmark results from various people. Some benchmark conclusion is performance is relatively same and few are saying openLDAP having greater performance as compare to Apache DS.
There are 4 open source implementations of LDAP directory servers :
Since there is no standard for LDAP benchmark, you will always find results that are in favor of the preferred server of the person running them. Regardless, performances are so tied to the scale of the data stored in the server, and the underlying hardware, that you shouldn't be selecting a product based uniquely on past benchmark results.
Go to the four projects, look at the product features, get them and install them, run the same tests on them for your data and load.
OpenDJ for example has tools to generate sample data (very large sets) and run performance testing for authentication, searches, modifications, creation and deletion (authrate, searchrate, modrate, addrate...).