<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">So the question is <br><br>Is it better to read the record from mnesia once and send the complete record to each of the 40,000 processes <br>
<br>or<br><br>Is it better to just send the key in the message and have each of the processes do an mnesia lookup</blockquote><br>
why not do both and measure the performance and that will give you your answer.