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Validate sqlite header

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This commit is contained in:
Ben Johnson
2020-11-06 12:33:01 -07:00
parent 9a2a30f239
commit d964e4199a
8 changed files with 235 additions and 149 deletions
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45
doc/DESIGN.md
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@@ -11,31 +11,40 @@ to construct a persistent write-ahead log that can be replicated.
```
dir/
db # SQLite database
db-wal # SQLite WAL
db.litestream # per-db configuration
db # SQLite database
db-wal # SQLite WAL
db.litestream # per-db configuration
.db-litestream/
log # recent event log
stat # per-db Prometheus statistics
snapshot # stores snapshot number (e.g. 0000000000000001)
wal/ # each WAL file contains pages in flush interval
active # active WAL file exists until flush; renamed
0000000000000001.wal.gz # flushed, compressed WAL files
0000000000000002.wal.gz
log # recent event log
stat # per-db Prometheus statistics
generation # current generation number
wal/ # each WAL file contains pages in flush interval
active.wal # active WAL file exists until flush; renamed
000000000000001.wal.gz # flushed, compressed WAL files
000000000000002.wal.gz
```
### Remote (S3)
```
bkt/
db/ # database path
0000000000000001/ # snapshot directory
snapshot # full db snapshot
0000000000000001.wal.gz # compressed WAL file
0000000000000002.wal.gz
0000000000000002/
snapshot
0000000000000001-0000000000000003.tar.gz
db/ # database path
00000001/ # snapshot directory
snapshot # full db snapshot
000000000000001.wal.gz # compressed WAL file
000000000000002.wal.gz
00000002/
snapshot/
000000000000000.snapshot
scheduled/
daily/
20000101T000000Z-000000000000023.snapshot
20000102T000000Z-000000000000036.snapshot
monthly/
20000101T000000Z-000000000000023.snapshot
wal/
000000000000001.wal.gz
```