Solon's Built-In Vault Plugin Encrypts Config Secrets Without External Tools

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The Solon Java framework offers a lightweight plugin called solon-security-vault that encrypts sensitive config values such as database passwords and API keys using an ENC() prefix in application configuration files. No external services, config servers, or tools like Jasypt are required — only a single dependency and a vault password need to be configured. Encrypted values are decrypted at injection time via the @VaultInject annotation or programmatically through VaultUtils, keeping plaintext secrets out of source code repositories. The vault password itself can be supplied as a JVM argument at runtime, allowing CI/CD pipelines to inject environment-specific keys without modifying any files. The plugin uses AES encryption by default and exposes a VaultCoder interface for teams that need a custom encryption implementation.

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Tutorial: Convert Chatbot Parse Failures Into Grammar Regression Tests

A developer tutorial on DEV Community outlines a workflow for improving custom-grammar chatbots by treating every misunderstood input as a potential regression test rather than a reason to loosen the parser. The approach keeps command execution strictly deterministic, meaning only fully parsed and domain-validated commands are ever acted upon. When a bot fails to recognize an utterance, AI can optionally suggest an interpretation, but that suggestion must be confirmed by a human before any grammar change is made. The tutorial uses a small JavaScript bot built with the Peggy parser and Zod validation to demonstrate three possible outcomes: accepted, no_match, or invalid. This separation ensures that a plausible but incorrect AI-generated interpretation can never silently trigger an unintended action.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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