HackerNews Summary (2023-06-06 10PM)

Source: Royal Navy Says Quantum Navigation Test a Success

Summary
The Royal Navy has tested a new quantum navigation system, which uses atoms to determine a vessel’s location with more precision than GPS. The tech, developed by Imperial College physicists, could replace satellite navigation that is currently employed.

Fact

🛳️ Quantum navigation allows a ship to navigate with greater accuracy than traditional chart and compass methods.

🔬 The technology utilizes the unique properties of atoms to achieve more precise measurements of an object’s movement compared to conventional methods.

🗺️ The quantum navigation system could provide an alternative to GPS which tends to malfunction or be jammed.

🌊 The tech’s ability to function while a craft is submerged could enable submarines to navigate accurately.

Source: splitgraph/seafowl-gcsfuse: Scale to zero Seafowl hosting with Cloud Run

Summary
Seafowl can be hosted as a serverless app on platforms like Cloud Run with a “scale to zero” architecture. The database objects are stored in S3 buckets and Seafowl’s catalog can be backed by SQLite, which speeds up HTTP requests, avoiding dependency on a persistent Postgres process. The addition of gcsfuse to the Seafowl container helps in mounting SQLite files from buckets.

Facts

💡 Seafowl can be hosted on Cloud Run with a “scale to zero” architecture.

🗄️ Database objects can be stored in S3 buckets, which avoids depending on a persistent volume.

💾 Seafowl’s catalog can be backed up by SQLite, good for the scale to zero story as it avoids dependency on a persistent Postgres process.

🚀 Platforms like Lambda and Cloud Run can forward incoming HTTP requests to the waiting Seafowl service, which is ideal for it to fetch the up-to-date SQLite catalog.

🔗 By adding gcsfuse to the Seafowl container, the SQLite file is mounted from the bucket into the Seafowl container, avoiding an additional charge for bucket <-> Cloud Run traffic.

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