Running JSR as a service, Vector Databases

Cushion Agency Implementation, Building Deno Backend Services

Learn how to deliver Deno-based backend projects using Cushion's PouchDB adapter for document storage, conflict resolution, and replication. This course teaches agencies to architect multi-writer systems with optimistic concurrency control, build type-safe map-reduce views for client analytics, and package Cushion-backed services as productized offerings for early-stage startups and development teams.

Open the decision record for JSR

What does running JSR for clients commit you to?

Published figures for this service. Blank fields are not published.

Monthly tool cost
Cushion is open-source under the MIT license with no published paid plan; vendor cost basis is $0. Additional agency setup and labor costs are Not published.
Time to first value
Not published, time_to_value is listed as hours and setup complexity as medium, but no explicit setup duration is published
Payback
Not modeled, client price, labor cost, usage, overhead, and expected volume are not supplied
Guided implementation
8 hours

Is JSR worth running as a client service?

The evidence supports Cushion as a free, open-source PouchDB adapter for Deno KV with optimistic concurrency, map-reduce views, and replication. What remains unknown is the agency's delivery cost structure and any market rate a client would pay, so no ROI can be stated.

An agency-fit judgement for reselling this service. It is separate from the tool description on the decision record.

Before you start

What has to be in place before the first client engagement.

Tools and subscriptions

  • Deno KV instance for document storage
  • PouchDB client library for API compatibility
  • JSR package access for the Cushion adapter
  • TypeScript toolchain for the ViewQuery type-safe builder

People and inputs

  • Documentation on Cushion's optimistic concurrency behavior and 409 conflict handling
  • Reference for Cushion's map-reduce views and reduce grouping
  • Reference for Cushion's init() custom configuration for specific Deno.Kv instances
  • Deno runtime environment aligned with the medium setup complexity

Included with the course

7 working documents for delivering this service.

  • Cushion Project Scoping Worksheetworksheet
  • Optimistic Concurrency Conflict Handling SOPsop
  • Map-Reduce View Builder Templatetemplate
  • Deno KV Persistence Architecture Checklistchecklist
  • Document Replication Setup Guideguide
  • Revision Tree Conflict Resolution Playbookguide
  • Cushion Retainer Delivery Pricing Modeltemplate

Listed by name. These documents are not yet published as individual downloads.