wip

README.md

@@ -5,48 +5,7 @@ An in-process, in-memory database for Go.
 ## TO DO
 
 * MDB Tests
-  *
-
-## Structure
-
-### Files
-
-```
-wal/<id>/data
-wal/<id>/length
-wal/<id>/archived
-max-committed-id
-write-lock
-commit-lock
-```
-
-`<day-ts>` is the unix timestamp / 86400. Therefore a new segment will be
-created every day. The data file is append-only, and the length is written
-atomically.
-
-`write-lock` is used by `flock` to ensure there's only one
-writer. `commit-lock` is used by the commit routine. This routine will commit
-data to the database and update `max-committed-id` atomically.
-
-### Code
-
-```
-retry/
-wal/
-  segment/
-storage/
-```
-
-## WAL File Format
-
-The WAL file consists of an 8 byte minimum ID followed by a stream of entries
-of the form
-
-```
-(4)           Data length
-(Data length) Data
-(8)           ID.
-```
-
-This allows us to quickly get the min and max IDs from the file, and iterate
-though the segment from the beginning.
+  * map index
+  * btree index
+  * btree iterator
+  * WAL shipping