Gunnar Morling dives into the tricks that the fastest 1BRC solutions used to process the challenge’s 13 GB input file within less than 2 secs — including parallelization and efficient memory access, optimized parsing routines using SIMD and SWAR, and custom map implementations.
Gunnar Morling is a software engineer and open-source enthusiast by heart. He is leading the Debezium project, a platform for change data capture (CDC). He is a Java Champion, the spec lead for Bean Validation 2.0 (JSR 380) and has founded multiple open source projects such as Deptective and MapStruct. Prior to joining Red Hat, Gunnar worked on a wide range of Java EE projects in the logistics and retail industries. He's based in Hamburg, Germany.
