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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>I am hoping this is an apt analogy, so please correct me if it is wrong…<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Before Loom, concurrency was like going to a bank with a fixed number of tellers, where each teller had a line of customers.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><ol style='margin-top:0cm' start=1 type=1><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span lang=EN-US>In Java terms, a teller is like Platform Thread<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span lang=EN-US>Generally, it would take time to process each customer, say an average of 5 minutes<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span lang=EN-US>Sometimes, a customer would block the process, such as the teller needed to make a phone call to get some information<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'><span lang=EN-US>No work is performed, while the teller is blocked waiting, and consequently the entire line is blocked<o:p></o:p></span></li></ol><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>After Loom, concurrency is like going to a bank with more modern policies and procedures<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><ol style='margin-top:0cm' start=1 type=1><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level1 lfo2'><span lang=EN-US>In Java terms, a teller is still like a Platform Thread, but has the ability to park a customer<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level1 lfo2'><span lang=EN-US>Generally, it still takes time to process each customer, say an average of 5 minutes<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level1 lfo2'><span lang=EN-US>Sometimes, a customer would block the process, such as the teller needed some information before proceeding…<o:p></o:p></span></li><ol style='margin-top:0cm' start=1 type=a><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level2 lfo2'><span lang=EN-US>The teller sends a text message or emails to get the necessary information<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level2 lfo2'><span lang=EN-US>The teller asks the customer to be seated, and as soon the information is available, they will be the next customer processed by the first available teller<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level2 lfo2'><span lang=EN-US>The teller starts processing the next customer in line<o:p></o:p></span></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level2 lfo2'><span lang=EN-US>This is analogous to a parked Virtual Thread, where the teller is like a Platform Thread, and the customer is like a Virtual Thread<o:p></o:p></span></li></ol><li class=MsoListParagraph style='margin-left:0cm;mso-list:l1 level1 lfo2'><span lang=EN-US>Concurrency is increased, by better policies and procedures in dealing with blocking operations<o:p></o:p></span></li></ol><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Yes, this is very simplistic, but intentionally so to try to expose what is so great about Virtual Threads.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Cheers, Eric<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>