This is an original planning guide. It is not a vendor manual, an official standard, or legal advice. Example addresses use documentation ranges. Review every command before you paste it.
What this hour is for
How to Configure Browser Caching on Lighttpd is one lab change on a Lighttpd host you administer. A cache header is a max-age for a static file you named. The browser tool drafts text. It does not log in.
Lighttpd. Do not paste Nginx or Apache syntax and expect the check to pass. The check is a config check, and a restart only when a second way in is open. The file is a Lighttpd config. It is not an Nginx server block and not an Apache VirtualHost..
One path. One duration you can say. Do not cache a page that shows a person's private data. The lab response for that path shows the duration in the ticket.
192.0.2.10/24, gateway 192.0.2.1, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. They belong in the note. They are not values you leave on a host because a draft included them.
The change you can finish
Apply nothing while you are writing the note. When the lab window opens, it is one change on the host named in the ticket. Read the draft, then the host, then decide.
Rollback is the file, the package version, or the snapshot you saved first. You do not invent a rollback after the only copy is gone.
- Write the hostname and confirm you administer it.
- Save the current file, package list, or snapshot before any draft is applied.
- Generate the draft and delete every line this ticket did not name.
- Remove documentation addresses, example.com, and any secret.
- Apply one change only when the lab window is open and a console or a second session exists.
- Read the result back and compare it with the ticket.
- Stop. The next change is a different page.
Mistakes that outlive the command
Browser Caching on Lighttpd goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.
- Pasting a draft you did not read.
- The wrong hostname.
- A secret in the ticket or in git.
- Two changes in one window.
- No copy saved before the change.
- A documentation address left on a host that is leaving the lab.
- Disabling a firewall, AppArmor, or SELinux to make a check pass.
- Calling the generator output a finished production change.
- Do not cache a page that shows a person's private data.
Decisions to write down
One decision for Browser Caching on Lighttpd: The hostname matches the ticket. The change is only Browser Caching. The platform is Lighttpd. A current copy was saved first. No secret is in the note. And the proof you expect is: The lab response for that path shows the duration in the ticket.
Checks before you call it done
Confirm this before you call the change done: The hostname was read from the host. The saved rollback exists. The draft was edited. One change was applied, or none yet because this was the writing hour. The read-back matches the ticket. And management still works. If one of those fails, stop.
# Lighttpd lab. Review before you paste.
# Change: Browser Caching.
# a config check, and a restart only when a second way in is open
# prompt-for-this is not a password.
# Delete 0.0.0.0/0 if a sample included it.
# 192.0.2.10/24, gateway 192.0.2.1, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. They belong in the note. They are not values you leave on a host because a draft included them.Before you leave the host
How to Configure Browser Caching on Lighttpd ends when the hostname in the prompt matches the hostname in the ticket. If it does not, you are on the wrong host. Stop. A command that succeeded on the wrong host is not progress.
The draft stays a draft until a person has read the names in it. A generator does not log into the host and does not know which disk is empty. You delete a line that names a host, a path, or an account you did not write down.
192.0.2.10/24, gateway 192.0.2.1, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. They belong in the note. They are not values you leave on a host because a draft included them.
prompt-for-this is a reminder that a secret is missing. It is not a password, a key, or a token you save in the ticket or in git. The real secret stays in the password store.
One change is the window. If two things move and the result is wrong, you will not know which one did it. The next change waits for its own page.
If the same step fails twice, stop for the day. The failure is the result. Adding a forum command beside a half-applied change produces a host nobody can rebuild. Restore the copy you took first.
A second person reads the hostname and the change aloud. If they cannot find them in the ticket, the note is not done. Silence is not agreement. Then leave the host alone.
This page is a planning guide. It is not a vendor manual, not an official standard, and not permission to touch a host you do not administer. You do not disable a firewall, AppArmor, or SELinux to make a check pass.
Tools for this guide
These tools run in the browser on this site. They do not log into your machines.
Related pillar guides
More in this cluster
The pillar for this page, and the next published pages filed with it.