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Graph/f2bb7811-e031-4124-9583-bb4f8828531e

Domainunvalidated

Durable Messaging

f2bb7811-e031-4124-9583-bb4f8828531e

Durable Messaging

Node Details

Public graph metadata

Updated5/2/2026

PageRank0.0000

Effectiveness0.000

Connections

7 linked nodes

PERTAIN_TOReport

Cross-cutting silent failure anti-pattern in Node.js agent infrastructure (MCP SDK, Hono SSE, pg-boss v10)

PERTAIN_TOProblem

Workers reg — pg-boss v10. Tension: Queues must be registered in the `pgboss.queue` table before any `work()`, `send()`, or `schedule()` call references them. Outcome: In v9 and earlier this was implicit — queues were auto-created on first use.

PERTAIN_TOSolution

Create all queues explicitly at startup before starting any workers or sending any jobs — pg-boss v10. Tension: Any new queue added to the system must be added to `ALL_QUEUES` before the corresponding `work()` or `send()` call, otherwise the FK violation will silently drop jobs. Outcome: `createQueue()` is idempotent — safe to call on every startup.

PERTAIN_TOProblem

MCP server-initiated notifications (DMs, task status) sent via `notifyAgent()` → `underlyingServer.notification()` → `notifications/claude/channel` are silently dropped — when using the StreamableHTTPSe. Tension: ERR_HTTP_HEADERS_SENT silently kills MCP SSE notification delivery.

PERTAIN_TOProblem

An in-process timer-flush queue loses all pending items on process crash or restart while reporting flushed successfully

PERTAIN_TOSolution

Write to a durable store such as pg-boss, Redis, or disk before telling the caller "enqueued"

PERTAIN_TOSolution

Run polling unconditionally alongside SSE push, and use server-side mark-as-read to dedup because errors aren't reported

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