Introduction

On 1st of June 2023 between 05:49 CEST and 06:24 CEST Tink’s services experienced a degraded performance affecting multiple products (AIS, Account Check, Transactions, Income Check, Risk insights, Expense Check, Connector API, Payments). The degradation resulted in a major outage during the time of the incident. 

We know how important it is to our customers that we provide a highly available and reliable service and we sincerely apologize for the disturbances this incident caused.

Root Cause Analysis

The incident was caused by a failure to scale one of the key services in the Tink Platform to accommodate request patterns during a planned increase in traffic. This caused degraded performance in the transaction processing. 

Remediation

At 06:24 CEST the load had been reduced and performance went back to normal across all Tink products. 

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Follow-up actions

As a consequence of this incident we will focus on the following actions to prevent similar scenarios from occurring again: 

• Increase available memory for the affected service
• Increase observability to more easily be able to pinpoint built up load in parts of the service 
• Long term improvements planned to the transaction processing architecture