lmdb

Dependencies

Ran into an issue 'llmdb.so could not be opened' -> add $LD_LIBRARY_PATH
Ran into an issue with MDB_val constructor, it seems like the function signatures are switched?
lmdb forces transactions
- BDB doesn't require transactions to be used
- db handle creation must take place in a transaction
lmdb has only one access method: key-value store
- unlike BDB where we have multiple access methods, e.g. RECNO
lmdb uses B+ tree data structure
- which means we can only implement a BTree internal representation
lmdb does not want you to modify the memory inside MDB_val's data
- copy the data and modify it, then put it into the DB.

call mdb_env_set_mapsize after calling mdb_env_create and before mdb_env_open
we get bt_ndata stat in the BDB version even though we are using a BTree access method because it has stores the amount of records in the DB if it was set with RECNO access method
view snippets of the C API being used in this repo
using MDB_APPEND will cause duplicate blocks to exist in your DB!

Name		Name	Last commit message	Last commit date
Latest commit History 41 Commits
data/example.mdb		data/example.mdb
src		src
tests		tests
.envrc		.envrc
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
default.nix		default.nix
flake.lock		flake.lock
flake.nix		flake.nix