Softwaretechnik-Trends 39(4) - 2019

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Konferenzbeitrag
Improving Batch Performance when Migrating to Microservices with Chunking and Coroutines
(Softwaretechnik-Trends Band 39, Heft 4, 2019) Knoche, Holger
When migrating enterprise software towards microservices, batch jobs are particularly sensitive to communication overhead introduced by the distributed nature of microservices. As it is not uncommon for a single batch job to process millions of data items, even an additional millisecond of overhead per item may lead to a significant increase in runtime. A common strategy for reducing the average overhead per item is called chunking, which means that individual requests for different data items are grouped into larger requests. However, chunking is difficult to integrate into existing batch jobs, which are traditionally executed sequentially. In this paper, we present a chunking approach based on coroutines, and investigate whether it can be used to mitigate the potential penalty to batch performance during migrations to microservices.