Financial clearing engines, zero-downtime modernization, strangler fig pattern, event sourcing, active replication
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Zero-Downtime Modernization of Financial Clearing Engines: A Systematic Review
Abstract: Financial clearing engines underpin global payment networks, securities settlement platforms, and interbank transaction infrastructures, processing trillions of dollars in financial transactions every day. Despite their critical role, many clearing systems continue to operate on legacy monolithic architectures that are difficult to scale, maintain, and modernize without disrupting essential services. This study presents a systematic literature review of 48 primary research studies published between 2015 and 2026, focusing on architectural approaches …
Published in NOLEGEIN Journal of Information Technology & Management · Vol. 9, Issue 2, 2026 · pp. 28–43 Read article