@EdgeOfSource

Developer data management for an edge-first world

 at the edge
source.network
Joined January 2025
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mmap B-tree: writes in place, single-writer, ~100× slower under load. Regolith: up to 8M txns/sec. And you can't bound page-cache memory on a 4 MB device. #Rust #database
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Where do DefraDB's access control policies live? Locally in the database, or on SourceHub — a replicated log that governs data across any number of nodes. Find out more: docs.source.network #Source #DefraDB #EdgeAI
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Agents need data that proves its origin. DefraDB signs every write and links it into a content-addressed Merkle DAG. A record becomes a verifiable claim: who wrote it, when, proof it's unchanged. Check provenance before you act. docs.source.network
A signed record linked into a chain, verified by a robot.

ALT A signed record linked into a chain, verified by a robot.

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Logging tells you what happened, later, if the log wasn't tampered with. It can't tell an agent right now if an input is trustworthy. Put provenance on the data: who wrote it, is it signed, has it changed. Verify at read time, not after the breach.
Robot inspects a signed seal with a magnifying glass; logs ignored.

ALT Robot inspects a signed seal with a magnifying glass; logs ignored.

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Tool poisoning is just TOCTOU in a hoodie. Time of check: you approve the tools. Time of use: the server swaps a description and the agent follows it. "Trust but verify" dropped the verify. Would your agent even notice the data changed underneath it?
Robot reads a tablet as a separate intruder arm alters it.

ALT Robot reads a tablet as a separate intruder arm alters it.

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Spotty networks? DefraDB's hole-punching P2P and replayable verifiable log keep your app working offline and merging conflict-free. Find out more: docs.source.network #Source #DefraDB #EdgeAI
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Your agent doesn't ask where data came from. Internal record, third-party API, another agent, a tool description that changed after approval — all flattened into one prompt, all equally trusted. It can't tell a signed fact from an attack. Can yours?
Pixel robot with identical data arrows flooding into its head.

ALT Pixel robot with identical data arrows flooding into its head.

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The C++ tax before query one: 2nd toolchain, cross-compile, FFI glue, 45s→18s build. And Rust's guarantees stop at the FFI line. Regolith: pure Rust. #Rust #database
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Attach policies directly to documents and users only see what they should. Document-level governance, built into DefraDB. Find out more: docs.source.network #Source #DefraDB #EdgeAI
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Consent lives in the app; the data lives where the app can't police it. DefraDB puts the policy on the data — each record enforces its own access on every read. Grant it, scope it, revoke it. Not your pipeline's job. docs.source.network
Row of documents each with its own padlock; robot holds one key.

ALT Row of documents each with its own padlock; robot holds one key.

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Consent is revocable. That's the part systems fail. A user says "stop using my data" — now find every copy, every derived set, everywhere it flowed. Most stacks can't even list where it went. Could you prove one user's data stopped being used?
Pixel robot pulling a thread that branches into scattered data copies.

ALT Pixel robot pulling a thread that branches into scattered data copies.

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How is consent stored? Usually a boolean. consented=true, sitting far from the data, joined by vibes. A foreign key with no constraint. The pipeline never checks it. When enforcement is "we'll remember," how long until someone doesn't?
A lone consent checkbox disconnected from a distant data vault.

ALT A lone consent checkbox disconnected from a distant data vault.

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Stop rebuilding permissions from scratch. DefraDB implements Google's Zanzibar, letting you attach access control policies directly to your documents — at Google scale. Find out more: docs.source.network #Source #DefraDB #EdgeAI
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Canada called OpenAI's scraping "overbroad." X got hit for a buried opt-out. "We had the data" is not "we were allowed to use it." Consent buried in a settings page isn't consent. Could you prove a user agreed to how their data is used?
Pixel robot blocked by a locked gate from a pile of data.

ALT Pixel robot blocked by a locked gate from a pile of data.

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4 MB memory cap → fits in flash, runs on the MCU. And a named compile error, not a link failure 20 min into the build. Regolith for the edge. #Rust #embedded
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Mobile networks drop constantly. DefraDB syncs anyway: world-class hole punching plus bandwidth-efficient diff sharing over P2P. Find out more: docs.source.network #Source #DefraDB #EdgeAI
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Edge AI moved compute local. Move the data there too. DefraDB is a local-first, P2P database that runs next to your model: local reads/writes, automatic offline merge via Merkle CRDTs. Delete your sync code. docs.source.network
Pixel robot beside a database, ringed by peer-to-peer nodes.

ALT Pixel robot beside a database, ringed by peer-to-peer nodes.

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Cache locally, sync later — easy. Until two devices edit offline, reconnect, and your hand-rolled merge picks a winner and eats a write. Caching is easy. Conflict-free merge is a distributed-systems problem. How much of your codebase is secretly sync logic?
Two pixel robots holding document copies with a tangled merge between them.

ALT Two pixel robots holding document copies with a tangled merge between them.

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Your edge app answers in 10ms. Then Wi-Fi drops and it hangs forever on a server it can't reach. "The network is reliable" is the #1 fallacy of distributed computing. You didn't ship edge — you shipped cloud with good ping. What happens at zero bars?
Pixel robot frozen with a buffering spinner and a no-signal icon.

ALT Pixel robot frozen with a buffering spinner and a no-signal icon.

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Need an audit trail? With DefraDB you already have one — every action is logged automatically. Find out more: docs.source.network #Source #DefraDB #EdgeAI
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