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[performance] retry db queries on busy errors (#2025)

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* catch SQLITE_BUSY errors, wrap bun.DB to use our own busy retrier, remove unnecessary db.Error type

Signed-off-by: kim <grufwub@gmail.com>

* remove dead code

Signed-off-by: kim <grufwub@gmail.com>

* remove more dead code, add missing error arguments

Signed-off-by: kim <grufwub@gmail.com>

* update sqlite to use maxOpenConns()

Signed-off-by: kim <grufwub@gmail.com>

* add uncommitted changes

Signed-off-by: kim <grufwub@gmail.com>

* use direct calls-through for the ConnIface to make sure we don't double query hook

Signed-off-by: kim <grufwub@gmail.com>

* expose underlying bun.DB better

Signed-off-by: kim <grufwub@gmail.com>

* retry on the correct busy error

Signed-off-by: kim <grufwub@gmail.com>

* use longer possible maxRetries for db retry-backoff

Signed-off-by: kim <grufwub@gmail.com>

* remove the note regarding max-open-conns only applying to postgres

Signed-off-by: kim <grufwub@gmail.com>

* improved code commenting

Signed-off-by: kim <grufwub@gmail.com>

* remove unnecessary infof call (just use info)

Signed-off-by: kim <grufwub@gmail.com>

* rename DBConn to WrappedDB to better follow sql package name conventions

Signed-off-by: kim <grufwub@gmail.com>

* update test error string checks

Signed-off-by: kim <grufwub@gmail.com>

* shush linter

Signed-off-by: kim <grufwub@gmail.com>

* update backoff logic to be more transparent

Signed-off-by: kim <grufwub@gmail.com>

---------

Signed-off-by: kim <grufwub@gmail.com>
This commit is contained in:
kim 2023-07-25 09:34:05 +01:00 • committed by GitHub
commit 5f3e095717
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53 changed files with 1050 additions and 898 deletions
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22
internal/db/bundb/tombstone.go
View file

@ -27,28 +27,28 @@ import (
)
type tombstoneDB struct {
conn *DBConn
db *WrappedDB
state *state.State
}
func (t *tombstoneDB) GetTombstoneByURI(ctx context.Context, uri string) (*gtsmodel.Tombstone, db.Error) {
func (t *tombstoneDB) GetTombstoneByURI(ctx context.Context, uri string) (*gtsmodel.Tombstone, error) {
return t.state.Caches.GTS.Tombstone().Load("URI", func() (*gtsmodel.Tombstone, error) {
var tomb gtsmodel.Tombstone
q := t.conn.
q := t.db.
NewSelect().
Model(&tomb).
Where("? = ?", bun.Ident("tombstone.uri"), uri)
if err := q.Scan(ctx); err != nil {
return nil, t.conn.ProcessError(err)
return nil, t.db.ProcessError(err)
}
return &tomb, nil
}, uri)
}
func (t *tombstoneDB) TombstoneExistsWithURI(ctx context.Context, uri string) (bool, db.Error) {
func (t *tombstoneDB) TombstoneExistsWithURI(ctx context.Context, uri string) (bool, error) {
tomb, err := t.GetTombstoneByURI(ctx, uri)
if err == db.ErrNoEntries {
err = nil
@ -56,23 +56,23 @@ func (t *tombstoneDB) TombstoneExistsWithURI(ctx context.Context, uri string) (b
return (tomb != nil), err
}
func (t *tombstoneDB) PutTombstone(ctx context.Context, tombstone *gtsmodel.Tombstone) db.Error {
func (t *tombstoneDB) PutTombstone(ctx context.Context, tombstone *gtsmodel.Tombstone) error {
return t.state.Caches.GTS.Tombstone().Store(tombstone, func() error {
_, err := t.conn.
_, err := t.db.
NewInsert().
Model(tombstone).
Exec(ctx)
return t.conn.ProcessError(err)
return t.db.ProcessError(err)
})
}
func (t *tombstoneDB) DeleteTombstone(ctx context.Context, id string) db.Error {
func (t *tombstoneDB) DeleteTombstone(ctx context.Context, id string) error {
defer t.state.Caches.GTS.Tombstone().Invalidate("ID", id)
// Delete tombstone from DB.
_, err := t.conn.NewDelete().
_, err := t.db.NewDelete().
TableExpr("? AS ?", bun.Ident("tombstones"), bun.Ident("tombstone")).
Where("? = ?", bun.Ident("tombstone.id"), id).
Exec(ctx)
return t.conn.ProcessError(err)
return t.db.ProcessError(err)
}