Storing data rows in hashmap

Hi ,
i have a requirement where i have to put rows from database into hashmap as keys and values.
I have a doubt whether hashmap can support large data such as 2000 records or entries.

Can any one please clarify whether it is a good idea to have such as huge data in maps for avoiding network traffic with database.

Thanks in advance.

If it reduces the DB calls then yes. And you need to look at whats the size of the entry. I mean you should be aware of the total memory taken by the hashmap

2000? That isn't "huge". It isn't even "large". Consider that your memory is measured in megabytes -- that's millions of bytes.

thanks manish and paul ... thank you very much for replying..