I can't speak to the first paragraph below, but can to the second.
 
-0.zip - contains the zipped UTF8 text file for a given etext number, e.g. 56843-0.txt.  "-8" is used for ISO-8859/Latin1 text files, while no designator is used for ASCII text files, e.g. 12345.txt
 
-h.zip - contains the zipped HTML file and its accompanying /images folder, if there is one.  To use 56843 as an example, it contains the entire contents of the folder 56843-h.
 
The epub and kindle files are auto-created from the underlying posted files (in http://www.gutenberg.org/files/56843/) at the time of posting.  They're stored elsewhere and are auto-regenerated should the posted files be corrected.  The posted HTML file is used as the source; if there's no HTML file, the text file is used.  Sometimes only a text file is submitted to PG--in such cases, an HTML file is auto-generated. 
 
 
Al Haines
Project Gutenberg
 
 
-----Original Message-----
From: gutvol-d [mailto:gutvol-d-bounces@lists.pglaf.org] On Behalf Of Tim Hare
Sent: Sunday, April 29, 2018 8:56 PM
To: gutvol-d@lists.pglaf.org
Subject: [gutvol-d] Ideas about book landing page & metadata presentation

Hello, I just joined this list but I’m interested in this current thread.  What is the goal of moving to these static HTML pages / directories?  Is it to eliminate the processing time necessary to generate these files with the current back-end processing?  Seems you will be (possibly) using more disk space – a trade-off which may be worth it, I’m not arguing against it – to save CPU time?

I need to understand more - What is currently stored for each book? Is it stored in all of the formats at  http://aleph.gutenberg.org/cache/epub/56843/  or are those created at the time someone requests them?
In https://www.gutenberg.org/files/56843/ what’s the difference between the -0 zip and the –h zip?

 

Tim Hare
Tallahassee, FL
Interested Bystander, Non-Inc.