dddb (Distributed DisVM Database) is a WIP RDBMS, aimed
to run on DisVM, hosted or native.
TODO Components and functionalities
* dddbctl fs - authenticated 9p fs to control, request, and query
operations related to the database instance; it
is the main driver for grid database
* dddbclient fs - the tcp port 'dddb' is used such that clients
can have a fs in which queries can be opened;
it will support ANSI SQL
* db registry - each instance will, on startup, connect to
other instances defined in an ndb configuration
file, register itself in that instance, and
will be able to use it for: duplicating data,
sharding data, and mount further instances;
(i.e if a cluster is behind a firewall, and
only one instance exposed, the hidden ones
can be mounted outside the fw)
* data structures (1) - primitives, pages, sections, indices,
tables, rows
* data structures (2) - B-trees, Bloom filters
* storage operations - a mounted directory tree will be used
for RDRW operations; memfs will be used
for caching the data in RAM (performance?)
* venti/vac support - venti + vac + memfs should suffice for
storing and persisting data (ramfossil-like);
this means scripts will clean and archive it
* SQL parser - obviously
* statement optimizer - obviously
* wm/dddbmon - a nice admin monitor would be nice
* dddbjdbc/dddbodbc - JDBC and ODBC drivers are mandatory
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