performance

Oct 6, 2026 1 min read

OpenLDAP 2.5 User asking about 2.6 versus 2.7

installation performance releases

From a happy user: > Hello > We are currently using the latest version from OpenLDAP 2.5. So far as I have seen now, the latest change for OpenLDAP 2.5 was on June 2025. Would you recommend us to upgrade to OpenLDAP 2.6 oder 2.7? In the attachment I send you our current configuration from our test environment. Do we have to make any changes in the configuration for upgrading to a newer version? Can you adapt the configuration files for us? With kind regards,

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Jun 4, 2026 1 min read

LDAPCon 2026 CALL FOR PROPOSALS 📣

Events Releases Installation Configuration Troubleshooting

#LDAPCon is the international Conference on #LDAP, that acts as meeting place for directory experts and experts on #Identity and #AccessManagement. You use LDAP in interesting projects? You do LDAP client or server development? You have used LDAP in a new way? You do identity and access management (IAM) on top of LDAP? 💡Why not share your ideas and experiences with others? We’re looking forward to your ideas and can’t wait to see the contributions from the community! For more information...

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Aug 20, 2025 1 min read

Taming Memory Pressure with LMDB

Performance

Pinterest Pinterest’s NGAPI switched to LMDB to ease memory pressure from its gevent-based multi-process setup. The change cut memory use...

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Dec 5, 2024 4 min read

The Achilles Heel of LRU Caches

Configuration Performance

Ever since we released LMDB, our advice to software designers has been "don't do application level caching. Let the kernel handle it for...

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Feb 9, 2024 8 min read

Are You Sure You Want to Use MMAP in Your DBMS?

performance

A paper with the above provocative title started making the rounds back in 2022. While we originally discussed it over twitter, and some...

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Sep 11, 2023 2 min read

Replication and memberOf

performance

Several years ago the OpenLDAP project “deprecated” the `memberof` overlay with preference for the `dynlist` (dynamic lists) overlay....

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Jan 3, 2022 1 min read

About the LDAP Load Gen Project

Performance

LDAP Load Generator is a tool we use at Symas to drive load tests for OpenLDAP releases. What Can It Do? Add, Modify, Delete, Read,...

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Jan 23, 2021 7 min read

Cache Management Lessons Learned

configuration performance

There’s still a lot of software in use today that tries to manage their own caches

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Feb 6, 2019 3 min read

Better Management for Directory (LDAP) Traffic

Configuration Performance

Many LDAP Directories have several servers handling requests from many clients. The load on each server varies. Redirecting traffic when...

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Dec 3, 2018 2 min read

The Not-So-Bright Future of Directory Services in Red Hat Enterprise Linux

Installation Performance

389-ds and Red Hat Directory Server are being touted as Red Hat’s LDAP server solutions on future versions of their OS, but the fine...

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Sep 4, 2018 1 min read

OpenLDAP for Linux Support from Symas Corporation

installation performance troubleshooting

A few weeks ago, I posted about Red Hat and SuSE and their plans to withdraw support for OpenLDAP from their upcoming Linux releases. In...

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Aug 21, 2018 2 min read

Large University Switches to Symas OpenLDAP, Sees Immediate Success

Performance

In 2001, a well known private university in Northern California with annual enrollments of over 16,000, was juggling its directory...

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