Senior Principal Engineer guide to database re-sharding, live cluster migration approaches, pros and cons, dual-write choreography, CDC replication, consistent hash expansion, and range splits.
Overview of ISO 20022 Migration.
Principal engineering guide to OpenSearch internals (Apache Lucene segments, FSTs, DocValues, Segment Replication, ISM tiers) and end-to-end Splunk-to-OpenSearch migration (Schema-on-Read vs Schema-on-Write, SPL to PPL/DSL translation, Data Prepper pipelines, and capacity math).
Guide to the Strangler Fig pattern for migrating monoliths to microservices. Details bounded context mapping, Anti-Corruption Layer (ACL) Spring Boot code, dual-writing data sync, eventual consistency, and migration gotchas.
