https://dewachtere.be/en/blog/Recent content in Blog on Rock-IT - Peter Dewachtere - Freelance IT DeveloperHugoenhttps://dewachtere.be/en/blog/etim-zoeken-elasticsearch-omniterm/Wed, 16 Sep 2026 00:00:00 +0000https://dewachtere.be/en/blog/etim-zoeken-elasticsearch-omniterm/<p>An installer who types &ldquo;pressure gauge 1/2&rdquo; wants one thing: the right article, right away. In the <a href="https://dewachtere.be/en/projects/omni-term-webshop/">Omni-Term B2B webshop</a> installers search by article number, supplier code, brand, description or technical feature, across a catalogue from many manufacturers. This is how I built that search.</p> <h3 id="one-search-box-many-kinds-of-questions">One search box, many kinds of questions</h3> <p>The query is analysed first. If the code recognises an article number or a supplier code, it goes straight to exact and wildcard matching on those fields, with the highest boost. If it recognises a brand name, products of that brand get priority. Everything else is treated as regular terms, searched across several fields at once: the description as exact keyword, as analysed text and as edge n-gram for prefixes, the product description, and the hierarchy from category down to product family. Searching for an old article number also finds the successor through a nested list of predecessors.</p>https://dewachtere.be/en/blog/whisper-spraaknotities-billableme/Wed, 16 Sep 2026 00:00:00 +0000https://dewachtere.be/en/blog/whisper-spraaknotities-billableme/<p>As a freelancer you get your best ideas in the car or on site, exactly when typing is not an option. That is why <a href="https://dewachtere.be/en/projects/billableme/">BillableMe</a> got voice notes: you speak a to-do, reminder or note, and half a minute later the text appears next to it, searchable. This is how I approached it.</p> <h3 id="the-requirements">The requirements</h3> <ul> <li>Audio stays on my own server, without an external transcription service.</li> <li>Dutch and English, with automatic language detection.</li> <li>No GPU: it has to run on the existing Docker Swarm.</li> <li>The user never waits for the transcription.</li> </ul> <h3 id="step-1-recording-in-flutter">Step 1: recording in Flutter</h3> <p>The app records with the <code>record</code> package in AAC (m4a), asks for microphone permission and lets you pick a category, a flag and a title right away. The file goes to the NestJS API as a multipart upload. From that moment the note is visible in the list, with the status &ldquo;processing&rdquo;.</p>