On 17/11/2009 15:43, David Balažic wrote:
Hi!
Does tomcat offer any mechanism for locking servlet executions?
So if one servlet does:
- get 10 EUR from account 1 (read account 1 balance; substract 10;
store new balance)
- add 10 EUR to account 2 (...)
How can I make sure no other servlet does (read account 1 balance;
sustract 10; store new balance) at the same
time and cause lost account money?
The account data is in a database, accessed over hibernate (or
directly, if needed).
The term you are looking for is "transaction". GIYF.
p
Regards,
David
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