'When should Data services be used as a data abstraction layer for the Business services which currently are directly accessing the data source?
Recently I was suggested to use Data services as a data abstraction layer for my Spring Boot Business services which currently talk directly to various data sources like Oracle DB, Elasticsearch etc. using business specific queries.
However, I am still not sure about why must I use Data services.
- Doesn't it add an extra hurdle for my business services in fetching data?
- Also, Data services would return a large number of data records as they won't be specific to any business scenario. Wouldn't it cause memory leak due to large amount of in memory data?
- And what are some great technologies which can be used to create Data services. I am exploring Dremio and GraphQL.
To understand the benefits of data services, I think, I should first understand under what circumstances is it absolutely necessary to go for them and when not?
Waiting for some great suggestions. Thanks.
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