Convex vs CircleCI

Convex

CircleCI

Convex · 18 features

• Actions — Non-deterministic functions for external I/O (fetch, AI APIs, email). Cannot rea…
• Authentication — Convex Auth (built-in) or BYO provider (Clerk, Auth0, Kinde, WorkOS). ID tokens …
• Convex Agents — AI agent framework with durable memory, threads, tool use. Works with OpenAI / A…
• Convex Auth — First-party auth library: passwords, magic links, OAuth, phone — stored in your …
• Convex Components — Reusable backend modules (rate limiter, workflow, aggregate, action-retrier, etc…
• Cron Jobs — Recurring schedules defined in convex/crons.ts. UTC, cron-style patterns.
• Durable Workflows — Long-running multi-step workflows with retries and at-least-once guarantees.
• Exception Reporting — Auto-capture errors to Sentry, Axiom, Datadog.
• File Storage — Upload/download via storage API. Returns storage IDs referenced in documents.
• Full-Text Search — BM25 search index on table fields. withSearchIndex query helper.
• HTTP Actions — Expose public HTTP endpoints for webhooks, OAuth callbacks, third-party integrat…
• Log Streams — Stream function logs to Axiom, Datadog, Sentry. Pro+.
• Mutations — Transactional write functions. All reads + writes in one mutation are ACID; conf…
• Preview Deployments — Every Git branch gets its own isolated deployment. Integrates with Vercel/Netlif…
• Queries — Deterministic read-only TS functions. Automatically cached and re-run when under…
• Real-Time Subscriptions — useQuery auto-subscribes; server invalidates when data a query read changes. No …
• Scheduler — schedule.after / schedule.at — enqueue functions to run later. Durable, survives…
• Vector Search — Native vector index on tables. withIndex + filter fields. Up to 4096 dims.

CircleCI · 17 features

• ARM + GPU Runners — ARM64 + T4 GPU resource classes.
• .circleci/config.yml — Single source of truth (YAML 2.1).
• Contexts — Org-scoped shared env vars.
• Deploy Markers — Track deployments + rollback.
• Docker Layer Caching — Reuse Docker layers.
• Dynamic Config — Generate config based on changed paths.
• Manual Approval — Gate workflows with manual step.
• Matrix Jobs — Parameterized parallel jobs.
• Orbs — Packaged reusable jobs + commands.
• Parallelism — Split a job across N parallel containers.
• Rerun with SSH — SSH into failed job.
• Restricted Contexts — RBAC for secrets.
• Scheduled Pipelines — Cron-triggered runs.
• Self-Hosted Runners — On your infra.
• Test Insights — Flaky test detection + trends.
• Test Splitting — By timings, filenames, classnames.
• Workflows (DAG) — Fan out, fan in, conditional.