main.py [1]
python
import os
import arel
from fastapi import FastAPI, Request
from fastapi.templating import Jinja2Templates
app = FastAPI()
templates = Jinja2Templates("templates")
if _debug := os.getenv("DEBUG"):
hot_reload = arel.HotReload(paths=[arel.Path(".")])
app.add_websocket_route("/hot-reload", route=hot_reload, name="hot-reload")
app.add_event_handler("startup", hot_reload.startup)
app.add_event_handler("shutdown", hot_reload.shutdown)
templates.env.globals["DEBUG"] = _debug
templates.env.globals["hot_reload"] = hot_reload
@app.get("/")
def index(request: Request):
return templates.TemplateResponse("index.html", context={"request": request})
# run:
# DEBUG=true uvicorn main:app --reload
I just discovered arel [2] for hot reloading python applications when content changes from this snippet that implements it for fatapi.
On app startup add the /hot-reload routes if in DEBUG mode.
import os
import arel
from fastapi import FastAPI, Request
from fastapi.templating import Jinja2Templates
app = FastAPI()
templates = Jinja2Templates("templates")
if _debug := os.getenv("DEBUG"):
hot_reload = arel.HotReload(paths=[arel.Path(".")])
app.add_websocket_route("...
Published
All published posts
2493 posts
latest post 2026-05-11
Publishing rhythm
External Link
X (formerly Twitter) Ā· twitter.com [1]
I need to learn regex capture groups better. This is so dang powerful. I really like the \v that bob uses here, it really does cut down on the terseness of all the special characters.
I wanted to replace all occurrences of:
name,[email protected],0,171,,2023-09-21
With:
name,[email protected]
Easy to do with Python, but what about a bit of > regex in Vim?
:%s/\v([^,]+,[^,]+),.*/\1/
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://twitter.com/bbelderbos/status/1709525676154368055
[2]: /thoughts/
External Link
X (formerly Twitter) Ā· twitter.com [1]
HATEOAS gonna hate. More and more htmx [2] seems like the js library for backend devs. So rather than making 55 rest calls here, just make an endpoint that does what you want it to do with one, or a few requests.
Note
This post is a thought [3]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://twitter.com/teej_dv/status/1708258701008593173
[2]: /htmx/
[3]: /thoughts/
Open source, not open contribution with Ben Johnson (Changelog Interviews #433)
This week we're talking with Ben Johnson. Ben is known for his work on BoltDB, his work in open source, and as a freelance Go developer. Late January when Ben open sourced his newest project Litest...
Changelog Ā· changelog.com [1]
Ben Johnson was on the Changelog a few years back covering his work on litestream, and talks about why he chose to go open source, but not open contribution.
You should have a good reason to move off of sqlite.
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://changelog.com/podcast/433
[2]: /thoughts/
jpillora/installer is the install script generator I have been looking for. It
downloads binaries for your machine from GitHub releases and unzips them for
you. It grabs the latest release, so you can easily update them. I have
tried scripting these installs in the past and struggled to consistently get
the latest version for every package and unpack it correctly.
Also these pre-compiled binaries install rediculously fast compared to building
them from source.
Check out some example links.
opening in a browser will show metadata
https://i.jpillora.com/serve
If you pass in script=true it will instead return the install script as it
would by default through curl.
https://i.jpillora.com/serve?script=true
Use it to install neovim # [1]
All you need to do to generate an install script is to pass in the GitHub repo
slug with the org.
curl https://i.jpillora.com/neovim/neovim | bash
The shell script that it generates for neovim looks like this.
#!/bin/bash
if [ "$DEBUG" == "1" ]; then
set -x
fi
TMP_DIR=$(mktemp -d -t jpillora-installer-XXXXXXXXXX)
function cleanup {
rm -rf $TMP_DIR > /dev/null
}
function fail {
cleanup
msg=$1
echo "============"
echo "Error: $msg" 1>&2
...
I wanted to host some static files through fastapi [1]. Typical use cases for this
might be some static web content like html [2]/css/js. It could also be images or
some data that doesnāt need dynamically rendered.
From the Docs # [3]
The docs cover how to host static files, and give this solution that is built
into fastapi.
https://fastapi.tiangolo.com/tutorial/static-files/
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles
app = FastAPI()
app.mount("/static", StaticFiles(directory="static"), name="static")
Authenticated Static Files # [4]
Thanks to #858 [5].
OscartGiles [6] posted this solution to add
authentication to static files. I tried this out on my
thoughts [7] and it worked flawlessly.
import typing
from pathlib import Path
import secrets
from fastapi import FastAPI, Request, HTTPException, status
from fastapi.staticfiles import StaticFiles
from fastapi.security import HTTPBasic, HTTPBasicCredentials
PathLike = typing.Union[str, "os.PathLike[str]"]
app = FastAPI()
security = HTTPBasic()
async def verify_username(request: Request) -> HTTPBasicCredentials:
credentials = await security(request)
correct_username = secrets.compare_diges...
Point-in-time recovery - Wikipedia
en.wikipedia.org [1]
I just learned that the term PITR means Point In Time Recovery. I have never seen this term, but it is most often referred to in relation to database recoveries.
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://en.wikipedia.org/wiki/Point-in-time_recovery
[2]: /thoughts/
-
Very inspiring talk, TLDR, you probably donāt need a database server. sqlite will probably be faster, simpler to maintain, and simpler to test your application.
Note
This post is a thought [1]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: /thoughts/
I recently se tup minio object storage in my homelab [1] for litestream sqlite
backups. The litestream quickstart made it easy to get everything up and
running on localhost, but I hit a wall when dns was involved to pull it from a
different machine.
Here is what I got to work # [2]
First I had to configure the Key ID and Secret Access Key generated in the
minio ui.
⯠aws configure
AWS Access Key ID [****************VZnD]:
AWS Secret Access Key [****************xAm8]:
Default region name [us-east-1]:
Default output format [None]:
Then set the the s3 signature_version to s3v4.
aws configure set default.s3.signature_version s3v4
Now when I have minio running on https://my-minio-endpoint.com I can use the
aws cli to access the bucket.
Note that https://my-minio-endpoint.com resolves to the bucket endpoint
(default 9000) not the ui (default 9001).
aws --endpoint-url https://my-minio-endpoint.com s3 ls my_bucket
Now Configuring Litestream # [3]
Litestream also accepts the endpoint argument via config. I could not get it
to work just with the ui.
Note the aws configure step above is not required for litestream, only the
aws cli.
dbs:
- path: /path/to/database.db
replicas:
-...
GitHub - benbjohnson/litestream: Streaming replication for SQLite.
Streaming replication for SQLite. Contribute to benbjohnson/litestream development by creating an account on GitHub.
GitHub Ā· github.com [1]
`litestream` is a sick cli tool for steaming replicas of sqlite. It automatically does daily snapshots, and streams all of the writes to the replica live.
install # [2]
Install is fast using installer, no compilation, just copy the binary and run.
curl https://i.wayl.one/benbjohnson/litestream
Note
This post is a thought [3]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://github.com/benbjohnson/litestream
[2]: #install
[3]: /thoughts/
why-is-postgres-default
Serious question.
No one ever got fired for choosing PostgreSQL # [1]
But, why. Itās the most loved db, right? Right? Maybe itās time to rethink
it.
Donāt get me wrong, if I need a relational db as a service, PostgreSQL is going
to be my first choice, but why do I need to run a separate application for it?
Tutorials use sqlite # [2]
Why is that? Because there is nothing else to stand up. Nothing else to
maintain. And you probably already have it installed on just about anything
that has a battery.
SQLite runs in memory # [3]
Donāt need, or maybe donāt want to persist state. Run it in memory. This is a
nice feature for running tests.
Less exposure # [4]
SQLite is a file on your filesystem. Itās not a web service. Itās not a cloud
service. Not that postgres is insecure, but it is one more endpoint that you
have to think about securing.
this means that is probably also cheaper š¤
SQLite is easy to replicate # [5]
Want to run your new feature with prod data? Pull a replica or...
Why I Built Litestream - Litestream
Despite an exponential increase in computing power, our applications require more machines than ever because of architectural decisions made 25 years ago. You can eliminate much of your complexity ...
litestream.io [1]
As applications scale to the edge, to put compute as close to the user as possible, database queries back to the master node get slower and slower. Enter sqlite replication, put the database wtih the application code and replicate from master.
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://litestream.io/blog/why-i-built-litestream/
[2]: /thoughts/
I'm All-In on Server-Side SQLite
Ben Johnson has joined Fly.io
Fly Ā· fly.io [1]
SQLite is the next big database trend. with more horizontal scaling, close to user read heavy applications, having your database in the same application stack makes a lot of sense. Tools like litestream are going to enable global distribution in an impressive way.
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://fly.io/blog/all-in-on-sqlite-litestream/
[2]: /thoughts/
LiteFS Cloud: Distributed SQLite with Managed Backups
Documentation and guides from the team at Fly.io.
Fly Ā· fly.io [1]
Fly.ioās solution to sqlite managed backups.I definitely want to look into this a bit, but moreso the tech under the hook litestream.
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://fly.io/blog/litefs-cloud/
[2]: /thoughts/
If youāre into interesting projects, donāt miss out on litestream [1], created by benbjohnson [2].
Streaming replication for SQLite.
References:
[1]: https://github.com/benbjohnson/litestream
[2]: https://github.com/benbjohnson
Iām impressed by flameshow [1] from laixintao [2].
A terminal Flamegraph viewer.
References:
[1]: https://github.com/laixintao/flameshow
[2]: https://github.com/laixintao
Looking for inspiration? installer [1] by jpillora [2].
One-liner for installing binaries from Github releases
References:
[1]: https://github.com/jpillora/installer
[2]: https://github.com/jpillora
GitHub - jpillora/installer: One-liner for installing binaries from Github releases
One-liner for installing binaries from Github releases - jpillora/installer
GitHub Ā· github.com [1]
This is a sick looking bash script generator for installing binaries off of github releases. it reccomends curl into bash, but you could curl into install.sh and toss that in your dotfiles repo or wherever.
Install installer with installer
curl -s https://i.jpillora.com/installer | bash
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://github.com/jpillora/installer
[2]: /thoughts/
How to run pods as systemd services with Podman
Podman is well known for its seamless integration into modern Linux systems, and supporting systemd is a cornerstone in these efforts. Linux commonly uses th...
redhat.com [1]
podman comes with a nice command for generating systemd service files (units).
$ podman pod create --name=my-pod
635bcc5bb5aa0a45af4c2f5a508ebd6a02b93e69324197a06d02a12873b6d1f7
$ podman create --pod=my-pod --name=container-a -t centos top
c04be9c4ac1c93473499571f3c2ad74deb3e0c14f4f00e89c7be3643368daf0e
$ podman create --pod=my-pod --name=container-b -t centos top
b42314b2deff99f5877e76058ac315b97cfb8dc40ed02f9b1b87f21a0cf2fbff
$ cd $HOME/.config/systemd/user
$ podman generate systemd --new --files --name my-pod
/home/vrothberg/.config/systemd/user/pod-my-pod.service
/home/vrothberg/.config/systemd/user/container-container-b.service
/home/vrothberg/.config/systemd/user/container-container-a.service
Note
This post is a thought [2]. Itās a short note that I make
about someone elseās content online #thoughts
References:
[1]: https://www.redhat.com/en/blog/podman-run-pods-systemd-services
[2]: /thoughts/
I like MordechaiHadadās [1] project bob [2].
A version manager for neovim
References:
[1]: https://github.com/MordechaiHadad
[2]: https://github.com/MordechaiHadad/bob