// ROUTE_TRANSITION_SYS :: BLOG/GRPC VS REST MICROSERVICES COMMUNICATION/
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// KROMA CODE BLOG :: BACKEND ARCHITECTURE
gRPC vs. REST APIs in 2026: When to Use Protocol Buffers over JSON for Microservices
Shishir Singh• 11 min read•July 19, 2026
💡 ARTICLE EXECUTIVE SUMMARY: "JSON serialization overhead can eat up 30% of backend CPU cycles. Discover how gRPC over HTTP/2 with binary Protocol Buffers accelerates internal microservice communication by 7x."
1. The Hidden Cost of JSON Serialization
Parsing string-based JSON payloads across internal microservice networks requires significant CPU cycles for string parsing and memory allocations. gRPC replaces JSON with binary Protocol Buffers (Protobuf) over multiplexed HTTP/2 streams.
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Backend APIs & Database Architecture // FEATURED CASE STUDY
SGMS World Enterprise System Written by Shishir Singh (Founding Engineer at Kroma Code, Lucknow)
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