Mosh Postgres Binary Protocol Proxying

Mosh Postgres Binary Protocol Proxying is not about friendly abstractions. It is about speed, precision, and a direct link between your client and the database. Postgres can speak in two modes: text and binary. The binary protocol sends data in a compact, pre-parsed format, cutting CPU cost and latency. It is the language that serious, high-performance systems use when every millisecond counts.

Proxying that protocol is hard. Most middle layers choke on raw binary frames or force conversion to text. That destroys the advantages: the query parsing, the reduced bandwidth, and the ability to handle large result sets without extra processing. Mosh solves this by sitting in the flow of data, handling the Postgres binary protocol without breaking it apart. It routes queries and responses exactly as they were formed, preserving the wire-level details.

At its core, Mosh accepts incoming Postgres binary connections, authenticates them, and connects them to the right data source. It can multiplex multiple clients over shared database pools, apply connection routing rules, and still pass binary results untouched. This makes it possible to scale out Postgres deployments without losing low-level protocol efficiency.

A proxy like Mosh must be careful with message boundaries, especially with extended query mode, prepared statements, and row description packets. It tracks protocol state: Bind, Execute, Sync. It understands backend messages like DataRow, ErrorResponse, and ReadyForQuery without translating them. That is how it avoids breaking binary protocol behavior.

When combined with modern cloud architectures, Mosh’s Postgres binary protocol proxying unlocks load balancing, failover, and centralized authentication—all without changing your application code or sacrificing performance. For workloads with streaming analytics, high-throughput event processing, or massive concurrent connections, Mosh can absorb traffic and direct it intelligently while keeping the pure binary channel intact.

This is not emulation. This is true Postgres binary proxying. It keeps your application talking to Postgres the way it was designed—fast, compact, and unmodified.

See it live in minutes. Go to hoop.dev and run Mosh with Postgres binary protocol proxying—no setup pain, just speed.