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refactor(eventstore): move push logic to sql (#8816)

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# Which Problems Are Solved

If many events are written to the same aggregate id it can happen that
zitadel [starts to retry the push
transaction](48ffc902cc/internal/eventstore/eventstore.go (L101))
because [the locking
behaviour](48ffc902cc/internal/eventstore/v3/sequence.go (L25))
during push does compute the wrong sequence because newly committed
events are not visible to the transaction. These events impact the
current sequence.

In cases with high command traffic on a single aggregate id this can
have severe impact on general performance of zitadel. Because many
connections of the `eventstore pusher` database pool are blocked by each
other.

# How the Problems Are Solved

To improve the performance this locking mechanism was removed and the
business logic of push is moved to sql functions which reduce network
traffic and can be analyzed by the database before the actual push. For
clients of the eventstore framework nothing changed.

# Additional Changes

- after a connection is established prefetches the newly added database
types
- `eventstore.BaseEvent` now returns the correct revision of the event

# Additional Context

- part of https://github.com/zitadel/zitadel/issues/8931

---------

Co-authored-by: Tim Möhlmann <tim+github@zitadel.com>
Co-authored-by: Livio Spring <livio.a@gmail.com>
Co-authored-by: Max Peintner <max@caos.ch>
Co-authored-by: Elio Bischof <elio@zitadel.com>
Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>
Co-authored-by: Miguel Cabrerizo <30386061+doncicuto@users.noreply.github.com>
Co-authored-by: Joakim Lodén <Loddan@users.noreply.github.com>
Co-authored-by: Yxnt <Yxnt@users.noreply.github.com>
Co-authored-by: Stefan Benz <stefan@caos.ch>
Co-authored-by: Harsha Reddy <harsha.reddy@klaviyo.com>
Co-authored-by: Zach H <zhirschtritt@gmail.com>
This commit is contained in:
Silvan
2024-12-04 14:51:40 +01:00
committed by GitHub
parent 14db628856
commit dab5d9e756
42 changed files with 1591 additions and 277 deletions
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4
internal/eventstore/eventstore.go
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@@ -90,7 +90,7 @@ func (es *Eventstore) Push(ctx context.Context, cmds ...Command) ([]Event, error
// PushWithClient pushes the events in a single transaction using the provided database client
// an event needs at least an aggregate
func (es *Eventstore) PushWithClient(ctx context.Context, client database.QueryExecuter, cmds ...Command) ([]Event, error) {
func (es *Eventstore) PushWithClient(ctx context.Context, client database.ContextQueryExecuter, cmds ...Command) ([]Event, error) {
if es.PushTimeout > 0 {
var cancel func()
ctx, cancel = context.WithTimeout(ctx, es.PushTimeout)
@@ -301,7 +301,7 @@ type Pusher interface {
// Health checks if the connection to the storage is available
Health(ctx context.Context) error
// Push stores the actions
Push(ctx context.Context, client database.QueryExecuter, commands ...Command) (_ []Event, err error)
Push(ctx context.Context, client database.ContextQueryExecuter, commands ...Command) (_ []Event, err error)
// Client returns the underlying database connection
Client() *database.DB
}