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When we released Datalevin 1.0.0, the message was that one database could handle application state across relational, graph, document, and logical workloads.

For years, advocates of statically typed languages have made the same argument: types catch mistakes earlier, compilers provide better feedback, IDEs offer better assistance, and large codebases become safer to maintain.

Today, after six years of development, I am thrilled to announce the availability of Datalevin 1.0.0.

There is a growing movement to use SQLite for everything.

In my previous post, Competing for the JOB with a Triplestore, I showed that a triple store, such as Datalevin, can compete with the best row stores on complex relational workloads.

In my previous post, I demonstrated that Datalevin performs complex queries faster than PostgreSQL.

This is a post about Datalevin, an open-source database system that I have been building since 2020.

Someone asked on Reddit: Why Clojure is not widely adopted like mainstream languages?

Here is the story.

Recently, I upgraded the FreeIPA server for my network to the latest version (4.8.10).

Is it possible for Taiwan to gain independence from China?

Someone asked on Reddit this question, for he's wondering if it is worth the time to learn Clojure well.

One of the latest fashions in the Java world is GraalVM.

For a public facing Web interface of FreeIPA server, it is desirable to use a 3rd party SSL certificate issued by a commonly accepted certificate authority, rather than using the server's own.

The main product of my startup is written in Clojure, a language that puts enormous pressure on the memory garbage collector due to the pervasive use of immutable data structures.

With newer versions of on-premise Sentry (I am using Sentry 20.10.1), the LDAP authentication does not seem to work any more.

To control access to various internal Web sites of a company, a simple method is to enable LDAP authentication on the Web server, so that the company directory can be brought to bear and there is no need to create individual accounts for employees on diff…

If you are using a self-hosted Netlify CMS as the online editor for your SSG powered Website and you are using the editorial workflow (you have publish_mode: editorial_workflow in your config.yml), a pain point is that you do not see a preview of the live…

Static Site Generator (SSG) is in vogue for building Web sites.

This blog has undergone a few migrations over its 15 years life span.

I challenge myself to read or listen to 52 books in 2020.

DokuWiki is one of the most easy-to-use open source Wiki software.

Discourse is a modern forum software that is quite popular in the technology circle.

Sentry is a fairly popular service for tracking exceptions and errors in production softwares.

The point of setting up freeIPA for an intranet is to enable single-sign-on (SSO) for all the internal services that requires authentication and authorization.

FreeIPA is the open source version of RedHat's identity management solution, which nicely integrates several open sources services that are important for managing an intranet: 389 LDAP Directory Server, MIT Kerboros, NTP, DNS, SSSD and others.

As part of our house modernization process, we bought an Ecobee3 Wifi enabled smart thermostat.

Since Drupal 6 is no longer supported, I upgraded this site to the lasted version of Drupal 8.4.2 by following the guide.

The list of items contained in our diaper bag for air travel, annotated with how essential each item was based on our experience as follows: *** Must have ** Nice to have * Not needed For travel gear that may not fit in your diaper bag, please visit this…

We traveled with Boyan, our 13-month son last month to Japan (for those who are wondering, yep, he is the main reason why this blog has been so quiet in the past couple of years. :-)) and spent a unforgettable 10 days there.

JSON is arguably the world's most popular human readable data format today.

Clojure has been my primary programming language for a couple of years now.

What makes Mayor Stubbs special?

After a long drive, the last stop of the second day of our trip is National Museum of Boyana Church, a UNESCO World Heritage Site.

The second day of our trip began with a long drive from Sofia to Rila Monastery, the largest and most famous Eastern Orthodox monastery in Bulgaria.

We were quite amazed by the National Archaeological Museum, especially the Thracian treasures.

(1) Sign of Sofia --- City of Lion.

Speaker: Tom Dear fellow kitties, I am going to show you how to get a kitty manicure and pedicure.

Planning: Following my usual strategy for travel planning, I first got some rough ideas on the highlights of the country by referring to the "Best of Bulgaria in 12 Days Tour" by Steve Rick.

Today I have encountered dirty diaper for the very first time in my life and it is not pretty.

I was traveling in Europe last week.

The IT department of my company has been urging us Mac users to upgrade OSX to Lion a long time ago.

If you have one or more long hair cats at home, like our Mayori and Tom, you probably share the same dream as us --- a house without cat hair, at least a house without having cat hair everywhere.

While preparing the camera-ready version for our CIKM demo, my colleagues and I found that the screenshot included in our paper appeared to be fairly blurry in the pdf version, even though the original .jpg file looks fine.

For unknown reason, my machines would suddenly disable their screen saver options (e.g. with the "on resume, display log on screen" check box grayed out).

I happen to come across this excellent article from this year's ICML on Machine Learning that Matters.

As a new home owner, we have been going through a lot of home remodeling and repair projects.

As a busy computer scientist, I don't really get to exercise my inner Martha too much.

It has been a while since Yunyao got her iPhone 4s, which is known for its "superb" camera --- "8MP camera with all-new optics also shoots 1080p HD video". 8MP on a cell phone sounds really impressive, does it?

As previously mentioned, I am learning category theory, beginning with Lawvere's Conceptual Mathematics book.