From OpenTelemetry to DuckDB
Table of Contents Why DuckDBSetup1. Install DuckDB2. Install the Dash0 CLI3. AuthenticateGetting spans out of Dash0Kicking the DuckDB tiresMaking it persistentFive useful queries1. Golden signals per service2. A latency histogram3. Pivot by status4. Share of total latency per service5. Convert ...
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NetBeans DataWrangler: Query, Convert, and Edit Data Analytics Files
Table of Contents File supportQuery, convert, copyThe SQL editorConnections and extensionsDesignInstallationApache NetBeans DataWrangler brings the file formats of data analytics into Apache NetBeans 31: CSV, Apache Parquet, JSON and Excel, the formats exchanged with pandas, Spark, R, dbt, Power BI …
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Running DuckDB’s JDBC Driver in a GraalVM Native Image
Table of Contents The Hello WorldWhat the Agent RecordedWhy It Failed BeforeA Larger ExampleWhere This Leaves the IssueDuckDB is an in-process analytical database. You add one JAR to a Java project and get a SQL engine that reads CSV, Parquet, …
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DuckDB in Spring Batch: Replace In-Memory Java Loops with One SQL Statement
Table of Contents The setupThe resultsWhy the differenceWhen to use itSpring Batch jobs usually follow the same pattern: an ItemReader streams rows, an ItemProcessor transforms each one, and an ItemWriter writes them out, chunk by chunk. A chunk-oriented step wires …
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Embedding DuckDB in a Maven App (and Using It for Things That Aren’t Databases)
Table of Contents SetupQuerying a file on the internet with SQLQuerying a file on the internet with SQLWhere this is actually usefulSumming upDuckDB is described as “SQLite for analytics,” which is true: it’s an in-process database engine that runs inside …
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Foojay Podcast #75: JCON Report, Part 4 – Tips and Tricks for Java Devs
Table of Contents VideoPodcast AppsContentThis is the final part of the JCON 2025 interviews with a lot of tips and tricks! In the three previous podcasts, we featured interviews from the JCON conference on “Being a better Java developer,” “Evolutions …
