About

Michael Zucchi

 B.E. (Comp. Sys. Eng.)

  also known as zed
  & handle of notzed

Tags

android (44)
beagle (63)
biographical (97)
blogz (9)
business (1)
code (73)
cooking (31)
dez (7)
dusk (30)
extensionz (1)
ffts (3)
forth (3)
free software (4)
games (32)
gloat (2)
globalisation (1)
gnu (4)
graphics (16)
gsoc (4)
hacking (451)
haiku (2)
horticulture (10)
house (23)
hsa (6)
humour (7)
imagez (28)
java (229)
java ee (3)
javafx (49)
jjmpeg (80)
junk (3)
kobo (15)
libeze (7)
linux (5)
mediaz (27)
ml (15)
nativez (9)
opencl (120)
os (17)
panamaz (3)
parallella (97)
pdfz (8)
philosophy (26)
picfx (2)
players (1)
playerz (2)
politics (7)
ps3 (12)
puppybits (17)
rants (137)
readerz (8)
rez (1)
socles (36)
termz (3)
videoz (6)
vulkan (3)
wanki (3)
workshop (3)
zcl (3)
zedzone (23)
Sunday, 29 April 2018, 12:02

BDB | !BDB?

I mentioned a few posts ago that there doesn't seem to be many NoSQL databases around anymore - at least last time I looked a year or two ago, all the buzz from a decade ago had gone away. Various libraries became proprietary-commercial or got abandoned.

For some reason I can't remember I went looking for BerkeleyDB alternatives and hit this stackoverflow question which points to some of them.

So I guess I was a little mistaken, there are still a few around, but not all are appropriate for what I want it for:

I guess the best of those is LMDB - i'd come across it whilst using Caffe but never looked into it. Given it's roots in replacing BDB it has enough similarities in API and features to be a good match for what I want (and written in a sane language) although a couple of niggles exist such as the lack of sequences and all the fixed-sized structures (and database size). Being a part of a specific project (OpenLDAP) means it's hit maturity without features that might be useful elsewhere.

The multi-version concurrency control and so on is pretty neat anyway. No transaction logs is a good thing. If I ever get time I might play with those ideas a little in Java - not because I necessarily think it's a great idea but just to see if it's possible. I played with an extensible hash thing for indexing in camel many years ago but it was plagued by durability problems.

Back to LMDB - i'll definitely give it a go for my revisioned database thing - at some point.

Tagged hacking, zedzone.
cdez + other stuff | https, TLS upgrade
Copyright (C) 2019 Michael Zucchi, All Rights Reserved. Powered by gcc & me!