Total 50,652 skills, Backend Development has 4147 skills
Showing 12 of 4147 skills
Use when users need Rust quantitative SDK or TQSDK Rust capabilities: real-time market data/quote/market depth/K-line/tick, product/contract list, main continuous contract/continuous contract, option chain, contract specification, metadata/direct query, historical data download/cache/CSV/Greeks, trading account/order placement/order cancellation/order status, TargetPosTask/risk control/multi-account/strategy execution, low-latency trading desk, stream/fan-out, replay/backtest/live-sim-replay; also applicable when agents need real-time or historical quantitative data, transaction execution substrate, or trading desk capabilities, even if TQSDK is not explicitly mentioned.
Builds full-stack Frappe Framework applications end-to-end. Use this skill any time the user mentions: creating or modifying a DocType, writing a controller or lifecycle hook, adding a whitelisted API, setting up a new Frappe app or bench site, building a desk form or list view, creating portal pages, writing background jobs or scheduled tasks, managing permissions or roles, writing Frappe tests, or working with frappe.db / frappe.qb. Also applies when the user says things like "how do I hook into save", "add a field to a DocType", "create a REST endpoint in Frappe", "run bench migrate", or "install an app on a site" — even if they don't explicitly say "Frappe".
Migrate Kotlin (and Java) code from kotlinx.collections.immutable 0.3.x / 0.4.x to the latest 0.5.x. The 0.5.x line renames every copy-returning method on PersistentList / PersistentMap / PersistentSet / PersistentCollection to a participial form per KEEP-0459 (add→adding, removeAt→removingAt, set→replacingAt, put→putting, clear→cleared, …) and deprecates the old names (WARNING, with ReplaceWith). Driven by the compiler: bump the version, recompile, and apply the rename each deprecation warning names. Use when the user mentions kotlinx.collections.immutable 0.5.x, PersistentList migration, "Use adding() instead", KEEP-0459, or sees deprecation warnings from kotlinx.collections.immutable.
Multi-tenant data isolation with one Rivet Actor per tenant: the actor key is the tenant id, so each tenant gets its own isolated dataset and migrations.
Build a realtime chat room backend with Rivet Actors: one actor per room, SQLite-backed message history, and WebSocket broadcast to every connected client.
Expert guidance for Drupal 10 module development with PHP 8+, SOLID principles, and Drupal coding standards
Design database schemas with proper normalization, relationships, constraints, and indexes. Use when creating database tables, modeling data relationships, or designing database structure.
Creates a fully functional Drizzle ORM setup with a provisioned Neon database. Installs dependencies, provisions database credentials, configures connections, generates schemas, and runs migrations. Results in working code that can immediately connect to and query the database. Use when creating new projects with Drizzle, adding ORM to existing applications, or modifying database schemas.
LOCAL-ONLY PyPI publishing with Doppler credentials. TRIGGERS - publish to PyPI, pypi upload, local publish. NEVER use in CI/CD.
Create secure REST API endpoints for Frappe Framework v15 with proper authentication, permissions, and validation. Triggers: "create api", "new endpoint", "frappe api", "rest api", "whitelist method", "/frappe-api". Generates v2 API compatible endpoints with type validation and security best practices.
Expert in Microsoft SQL Server development and administration. Use when writing T-SQL queries, optimizing database performance, designing schemas, configuring SQL Server, or integrating SQL Server with Node.js using mssql package.
Guide for making changes to the database schema, validation, types, and data access layer. Use when adding tables, columns, relations, or modifying the data model. Triggers on: add table, add column, modify schema, database change, data model, new entity, schema migration.