Beyond JSON - An Introduction to FlatBuffers

Oct 4, 20160 likes13,589 views

This document provides an introduction and overview of FlatBuffers, a cross-platform library for efficient serialization of structured data. It discusses why data serialization is needed, important criteria for persisting and sending data, comparisons of JSON and FlatBuffers, and demonstrates FlatBuffers features like the IDL, size and performance benefits, partial reads, and support for data versioning.

Maxim Zaks
Beyond JSON -
An Introduction to FlatBuffers

Agenda
• About me
• The Why and How of Data Serialisation
• Deep dive into FlatBuffers

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Beyond JSON - An Introduction to FlatBuffers

Why do we need data
serialisation?
• Persisting State
• Machine to Machine Communication
• Representation of Conﬁguration

How can we persist data
on mobile?
• Custom binary representation
• Language provided binary serialisation
• Text based representation
• CSV, XML, JSON,YAML
• Embedded SQL or NoSQL DB
• Binary cross platform serialisation library
• FlatBuffers, Protocol Buffers, Cap’n Proto, SBE,
Apache Thrift

Important criteria for persisting
data
• Size on disk
• Speed of read & write / partial read /
memory consumption
• Human readable and writable
• Support of OO language type system
• Data versioning / evolution / migration

JSON
• Size on disk 👍👎
• Speed of read & write / partial read /
memory consumption 👎
• Human readable and writable 👍 👍
• Support of OO language type system 👍👎
• Data versioning / evolution / migration 👍👎

FlatBuffers
• Size on disk 👍👎
• Speed of read & write / partial read /
memory consumption 👍 👍
• Human readable and writable 👍👎
• Support of OO language type system 👍 👍
• Data versioning / evolution / migration 👍 👍

JSON FlatBuffers
size on disk 👍👎 👍👎
read & write
performance
👎 👍👍
human readable &
writable
👍👍 👍👎
typed API 👍👎 👍👍
multi version support 👍👎 👍👍

Important criteria for sending
data
• Size on disk wire
• Speed of read & write / partial read /
memory consumption
• Human readable and writable
• Support of OO language type system
• Data versioning / evolution / migration

Speed of read, write
and memory allocation

• over 3M cities
• ≈200 MB
• real time search
• in memory
• from ﬁle 10x
slower

Human readable & writable
is a manner of tooling
• ./ﬂatc -b person.fbs person.json
• ./ﬂatc -t person.fbs -- person.bin --raw-
binary --strict-json

More information
• https://google.github.io/ﬂatbuffers/
• https://github.com/mzaks/
FlatBuffersSchemaEditor
• https://github.com/mzaks/FlatBuffersSwift
• https://twitter.com/iceX33

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