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Older technologies are more reliable and last longer, because they have survived the changes of time. That also means if you learn older technology (my rule of

Older technologies are more reliable and last longer, because they have survived the changes of time. That also means if you learn older technology (my rule of thumb is 15+– think Elixir, Lisp, Haskell, Python, Java, C++), your knowledge is unlikely to expire.

Jtsummers 5y ago
I think you mean Erlang there and not Elixir. Elixir itself is only 10 years old, Erlang is 35. That said, Elixir does seem to be pretty stable, I've not run into major issues when learning it with regard to dated material being "wrong" (either actually wrong with regard to the current language incarnation, incomplete like pre-`go mod` golang materials, or "off" from the current idiomatic use of the language).
TwoBit 5y ago
FTP is not reliable. It has survived (though it's nearly dead) only due to entrenchment.
- Anthony-G 5y ago
  I was surprised to discover that FTP (or SFTP) is not reliable. A couple of years ago, I discovered that there were mis-matches between files sent to a remote SFTP server using Perl’s `Net::SFTP` and the checksum that was sent after the complete set had been transmitted. The uploaded files were a few bytes smaller than they should have been. I didn’t have the time/resources for a deep dive to determine the root cause of the problem so my work-around at the time was to use `stat` to compare file sizes of the local and uploaded file. If they didn’t match, the file was simply re-transmitted – and it always worked the second time. ¯\_(ツ)_/¯
  - bsagdiyev 5y ago
    Afaik SFTP is not the same as FTPS. SFTP is based on SSH, whereas FTPS just adds SSL/TLS on top of FTP so that wouldn’t be an issue with FTP, but SSH.
- mickael-kerjean 5y ago
  > though it's nearly dead There's still millions of ftp servers running the wild: https://www.shodan.io/search?query=ftp https://www.shodan.io/search?query=ftp

Jtsummers 5y ago

I think you mean Erlang there and not Elixir. Elixir itself is only 10 years old, Erlang is 35. That said, Elixir does seem to be pretty stable, I've not run into major issues when learning it with regard to dated material being "wrong" (either actually wrong with regard to the current language incarnation, incomplete like pre-`go mod` golang materials, or "off" from the current idiomatic use of the language).

TwoBit 5y ago

FTP is not reliable. It has survived (though it's nearly dead) only due to entrenchment.

Anthony-G 5y ago
I was surprised to discover that FTP (or SFTP) is not reliable. A couple of years ago, I discovered that there were mis-matches between files sent to a remote SFTP server using Perl’s `Net::SFTP` and the checksum that was sent after the complete set had been transmitted. The uploaded files were a few bytes smaller than they should have been. I didn’t have the time/resources for a deep dive to determine the root cause of the problem so my work-around at the time was to use `stat` to compare file sizes of the local and uploaded file. If they didn’t match, the file was simply re-transmitted – and it always worked the second time. ¯\_(ツ)_/¯
- bsagdiyev 5y ago
  Afaik SFTP is not the same as FTPS. SFTP is based on SSH, whereas FTPS just adds SSL/TLS on top of FTP so that wouldn’t be an issue with FTP, but SSH.
mickael-kerjean 5y ago
> though it's nearly dead There's still millions of ftp servers running the wild: https://www.shodan.io/search?query=ftp https://www.shodan.io/search?query=ftp