From: arne@vajhoej.dk   
      
   On 7/12/2025 9:35 AM, bill wrote:   
   > On 7/11/2025 8:16 PM, Arne Vajhøj wrote:   
   >> The idea of a 1:1 port is usually bad. Yes - you can implement the   
   >> exact same flow of your Cobol application in Java/C++/Go/C#,   
   >> but that only solves a language problem not an architecture problem.   
   >   
   > The biggest problem with this the idea of going from a domain specific   
   > language to a general purpose language.  While you can write an IS in   
   > pretty much any language (imagine rewriting the entire government   
   > payroll currently in COBOL in BASIC!!) there were real advantages to   
   > having domain specific languages.  But then, no one today seems to even   
   > consider things like efficiency.  Just throw more hardware at the   
   > problem.   
      
   That argument made sense 40 years ago, but I don't think there   
   is much point today - the modern languages have the features   
   the need like easy database access and decimal data type and   
   the missing features like terminal screen and reporting are no   
   longer needed.   
      
   >> You need to re-architect the solution: from ISAM to RDBMS,   
   >   
   > This is the only one I totally agree with but the original problem   
   > had nothing to do with the language.  It had to do with the fact that   
   > RDBMS wasn't around when COBOL was written.  I have been doing COBOL   
   > and RDBMS since 1980 and it was old code when I got there.   
      
   True.   
      
   But it is still a relevant example of where 1:1 will go wrong. If   
   you have a Cobol system using ISAM files, then do not want to convert   
   it to a Java/C++/Go/C# system using ISAM files.   
      
   >> from vertical app scaling to horizontal app scaling,   
   >   
   > Not really sure what this means.  :-)   
      
   You can call it cluster support.   
      
   If you run out of CPU power, then instead of upgrading from a   
   big expensive box to a very big very expensive box then you just   
   add a cluster node more.   
      
   >>                                  
   Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  from 5x16 to   
   >> 7x24 operations etc..   
   >   
   > Certainly don't get this.  Every place I ever saw COBOL was 24/7 and   
   > that is going back to at least 1972.   
      
   I would be surprised if you have never experienced a financial   
   institution operating with a "transaction will be completed   
   next day" model.   
      
   Arne   
      
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