If you're running a business website (or are just particularly chatty), you might want to display a button which allows users to contact you via Facebook Messenger. This ease of access can lead to increased conversion rates.

Facebook used to provide a "Message me" widget, however these were discontinued in September 2024.

However, it's possible to construct a hyperlink which can be used to initiate a conversation via facebook messenger.

This snippet details how to construct a link which begins a messenger conversation with your account on Facebook.

Business Pages

This approach also works for business pages, however you'll need to ensure that you've set a username for the page:

1. Switch to your page profile
2. Settings -> Page Setup.
3. Click the View button next to Name
4. If you've a username set it'll be displayed, otherwise there'll be a textbox to select it.

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This javascript function generates a table with a cell per day of the year. Months are on separate rows.

Each cell within the table has an id using the format m-d (i.e. 4th of May is 5-4).

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I bought some Duckeys.

They come with software to make the computer quack when the key is pressed, but it's only available on Windows and Mac.

This snippet uses Python to watch for keypresses and play audio when one is detected. The example goes further and plays a quack if the pressed key is one with a Duckey on.

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Running kubectl get pods is pretty straightfoward, but it can do also do a lot of filtering

If you've ended up with fewer pods per node than expected, it's worth looking at what resources are being requested. Similarly, if you're seeing a high rate of evictions, it's worth looking at what the limits are

This snippet details listing requests and limits, per pod, on a node

Note: if you have, or are able to install the kubectl-ice plugin it's a far superior method because it can also show you what's actually been used.

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The dataview plugin for Obsidian allows you to run queries against your obsidian vault (for example, to create a Related Items section).

This snippet provides a DQL query which lists all notes created after a certain date

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ShotShare is an OSS image sharing application. It allows users to upload images and creates sharing and embed links

Uploads can be submitted through a web-browser, but there's also an API

This snippet details how to upload an image using curl.

You'll need to have generated an API token under Profile

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It's sometimes desirable to caculate the difference between subsequent points.

This might be necessary, for example, if a record's value is drawn from a cumulative total (such as packet counter on a switch) - we're not really interested in the total value so much as the change over time.

The LAG function can be used to look at the previous value, whilst LEAD can be used to look at the next

If the source is something like a packet counter, it might also be desirable to generate a non-negative difference so that a counter reset doesn't lead to large negative figures being reported.

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Running kubectl get pods is pretty straightfoward, but it can do also do a lot of filtering

If contention is suspected, it's often useful to be able to see what other workloads the underlying node is carrying

This snippet details getting node information from kubectl, with an example showing out how to list all pods that are running on the same node as a pod with a specific label.

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In a busy repo, you sometimes want to filter to git log by commit author - whether to exclude commits from a prolific author, or to review all commits by a specific author.

This snippet tells git log to include or exclude by author

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I sometimes use redis as an application level caching tier. Occassionally I want to flush the cache by deleting all entries where the key has a certain prefix

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