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fix(BRIDGE-533): fix numStoreRoutines calculation #468

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annatar merged 1 commit into from
Apr 23, 2026
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fix(BRIDGE-533): fix numStoreRoutines calculation #468

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5 changes: 4 additions & 1 deletion internal/backend/connector_updates.go
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Original file line number Diff line number Diff line change
Expand Up @@ -357,7 +357,10 @@ func (user *user) applyMessagesCreated(ctx context.Context, update *imap.Message

for _, chunk := range xslices.Chunk(messagesToCreate, db.ChunkLimit) {
// Create messages in the store in parallel
numStoreRoutines := max(runtime.NumCPU()/4, len(chunk))

// the number of routines to use for the store operations is 2* the number of CPUs or if the number of items in the chunk is less, use that number instead.
numStoreRoutines := min(len(chunk), runtime.GOMAXPROCS(0)*2)

if err := parallel.DoContext(ctx, numStoreRoutines, len(chunk), func(ctx context.Context, i int) error {
msg := chunk[i]
if err := user.store.SetUnchecked(msg.InternalID, msg.reader); err != nil {
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