All blocks cheat sheet (kitchen sink)

15.07.2026 2 MIN READ

This post is a showcase of every block in the theme. Scroll through and take a look.

Images

A regular markdown image:

Demo

Or via shortcode with a caption:

Badge

ACCESS OK WARN FAIL INFO NEUTRAL SOLID

Alert

This is information
A regular informational block. Read carefully.

Done
The operation completed successfully.

Error
Something went wrong.

Admonition (collapsible)

Note

Content expands on click.

Tip

Hugo renders shortcodes ahead of time — so nested blocks work like a constructor.

Accordion

What is backpressure?

A mechanism by which a slow consumer signals the source to slow down, so the system doesn’t crash.

Where does it appear?

Tabs

java

var stream = builder.stream("in");
stream.filter(k -> k != null).to("out");

python

for msg in consumer:
    if msg.key: producer.send("out", msg)

Timeline

2024
ALM School launch
Ran the first Kafka Streams cohort.
2025
Spring course
Added a reactivity module.
2026
This blog
Opened the dev blog in the Vertex design system.

Code with highlighting (design-system colors)

java KafkaStreams.java

public static void main(String[] args) {
    // build the stream topology
    var builder = new StreamsBuilder();
    KStream<String, String> stream = builder.stream("orders");
    stream.filter((k, v) -> v != null) // drop empty
          .mapValues(v -> v.toUpperCase())
          .to("orders-upper");
    var topology = builder.build();
    new KafkaStreams(topology, props).start();
}

Inline code also follows the theme: var x = 42;.

KaTeX

Inline formula: $throughput = \frac{messages}{second}$.

Block formula:

\sum_{i=1}^{n} x_i = x_1 + x_2 + \dots + x_n

Mermaid

graph LR A[Producer] --> B[Kafka Topic] B --> C{Streams App} C -->|filtered| D[(Store)] C -->|errors| E[DLQ]

Chart

Messages per second

YouTube Lite

Via shortcode (lazy-load: poster → click → player):

Or just paste a link on its own line — Hugo embeds the video itself:

Gist

Article embed

Hello, this is the dev blog

The first post: what this blog is about and which topics we'll cover.

The first post: what this blog is about and which topics we’ll explore — Kafka Streams, Spring, backpressure and backend engineering practices.

#demo#shortcodes#kafka