[performance] cache more database calls, reduce required database calls overall (#3290)

* improvements to caching for lists and relationship to accounts / follows

* fix nil panic in AddToList()

* ensure list related caches are correctly invalidated

* ensure returned ID lists are ordered correctly

* bump go-structr to v0.8.9 (returns early if zero uncached keys to be loaded)

* remove zero checks in uncached key load functions (go-structr now handles this)

* fix issues after rebase on upstream/main

* update the expected return order of CSV exports (since list entries are now down by entry creation date)

* rename some funcs, allow deleting list entries for multiple follow IDs at a time, fix up more tests

* use returning statements on delete to get cache invalidation info

* fixes to recent database delete changes

* fix broken list entries delete sql

* remove unused db function

* update remainder of delete functions to behave in similar way, some other small tweaks

* fix delete user sql, allow returning on err no entries

* uncomment + fix list database tests

* update remaining list tests

* update envparsing test

* add comments to each specific key being invalidated

* add more cache invalidation explanatory comments

* whoops; actually delete poll votes from database in the DeletePollByID() func

* remove added but-commented-out field

* improved comment regarding paging being disabled

* make cache invalidation comments match what's actually happening

* fix up delete query comments to match what is happening

* rename function to read a bit better

* don't use ErrNoEntries on delete when not needed (it's only needed for a RETURNING call)

* update function name in test

* move list exclusivity check to AFTER eligibility check. use log.Panic() instead of panic()

* use the poll_id column in poll_votes for selecting votes in poll ID

* fix function name
This commit is contained in:
kim 2024-09-16 16:46:09 +00:00 committed by GitHub
commit 84279f6a6a
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68 changed files with 1683 additions and 2135 deletions

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@ -64,15 +64,8 @@ func (a *accountDB) GetAccountsByIDs(ctx context.Context, ids []string) ([]*gtsm
accounts, err := a.state.Caches.DB.Account.LoadIDs("ID",
ids,
func(uncached []string) ([]*gtsmodel.Account, error) {
// Avoid querying
// if none uncached.
count := len(uncached)
if count == 0 {
return nil, nil
}
// Preallocate expected length of uncached accounts.
accounts := make([]*gtsmodel.Account, 0, count)
accounts := make([]*gtsmodel.Account, 0, len(uncached))
// Perform database query scanning
// the remaining (uncached) account IDs.
@ -796,20 +789,14 @@ func (a *accountDB) UpdateAccount(ctx context.Context, account *gtsmodel.Account
}
func (a *accountDB) DeleteAccount(ctx context.Context, id string) error {
defer a.state.Caches.DB.Account.Invalidate("ID", id)
// Gather necessary fields from
// deleted for cache invaliation.
var deleted gtsmodel.Account
deleted.ID = id
// Load account into cache before attempting a delete,
// as we need it cached in order to trigger the invalidate
// callback. This in turn invalidates others.
_, err := a.GetAccountByID(gtscontext.SetBarebones(ctx), id)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
// NOTE: even if db.ErrNoEntries is returned, we
// still run the below transaction to ensure related
// objects are appropriately deleted.
return err
}
// Delete account from database and any related links in a transaction.
if err := a.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
return a.db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
// clear out any emoji links
if _, err := tx.
NewDelete().
@ -822,44 +809,19 @@ func (a *accountDB) DeleteAccount(ctx context.Context, id string) error {
// delete the account
_, err := tx.
NewDelete().
TableExpr("? AS ?", bun.Ident("accounts"), bun.Ident("account")).
Where("? = ?", bun.Ident("account.id"), id).
Model(&deleted).
Where("? = ?", bun.Ident("id"), id).
Returning("?", bun.Ident("uri")).
Exec(ctx)
return err
})
}
func (a *accountDB) SetAccountHeaderOrAvatar(ctx context.Context, mediaAttachment *gtsmodel.MediaAttachment, accountID string) error {
if *mediaAttachment.Avatar && *mediaAttachment.Header {
return errors.New("one media attachment cannot be both header and avatar")
}
var column bun.Ident
switch {
case *mediaAttachment.Avatar:
column = bun.Ident("account.avatar_media_attachment_id")
case *mediaAttachment.Header:
column = bun.Ident("account.header_media_attachment_id")
default:
return errors.New("given media attachment was neither a header nor an avatar")
}
// TODO: there are probably more side effects here that need to be handled
if _, err := a.db.
NewInsert().
Model(mediaAttachment).
Exec(ctx); err != nil {
}); err != nil {
return err
}
if _, err := a.db.
NewUpdate().
TableExpr("? AS ?", bun.Ident("accounts"), bun.Ident("account")).
Set("? = ?", column, mediaAttachment.ID).
Where("? = ?", bun.Ident("account.id"), accountID).
Exec(ctx); err != nil {
return err
}
// Invalidate cached account by its ID, manually
// call invalidate hook in case not cached.
a.state.Caches.DB.Account.Invalidate("ID", id)
a.state.Caches.OnInvalidateAccount(&deleted)
return nil
}