How to select for update using spring data and postgresql? -


i have spring boot application , postgresql database. in database have table column pdfgenerated , in application have scheduled task selects 10 rows table have column set false, generates pdf them , sets column true.

my problem arises when try deploy 2 instances of application on different servers (both connected same database). how can 1 tell spring use database's select update mechanism when second instance of application performs it's query other rows not yet selected first instance of application ?


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