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新版 PttBBS 用到的 flatbuffers
新版 PttBBS 用到的 flatbuffers
留個記錄上後面的人知道怎麼編…
我自己有用 PttBBS 架個站自己丟一些東西，本來是想要修改發文時延遲一秒的 sleep(1); 保護 (反正整個站也只有我自己用，patch 在 Remove sleep(1) protection. 這邊)，結果升級的過程中間發現 PttBBS 上個月引入了 Google 家的 flatbuffers，就編不過去了…
找了一下找到給 Ubuntu 18.04 (bionic) 用的 PPA，是 1.11 版：「flatbuffers」，裝起來之後發現用了 --filename-suffix 語法，這個功能在 1.12 才被引入：「Added –filename-suffix and –filename-ext to flatc」。
另外就算故意拿掉 --filename-suffix，看起來 fbs 檔內也有用到 1.12 才吃的格式，所以還是照「H…
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FlatBuffers is an efficient cross platform serialization library for C++, C#, C, Go, Java, JavaScript, PHP, and Python. It was originally created at Google for game development and other performance-critical applications.
read for the details
Why use FlatBuffers?
Access to serialized data without parsing/unpacking
Memory efficiency and speed
Flexible
Tiny code footprint
Strongly typed
Cross platform code with no dependencies
But all the cool kids use JSON!
JSON is very readable (which is why we use it as our optional text format) and very convenient when used together with dynamically typed languages (such as JavaScript). When serializing data from statically typed languages, however, JSON not only has the obvious drawback of runtime inefficiency, but also forces you to write more code to access data (counterintuitively) due to its dynamic-typing serialization system. In this context, it is only a better choice for systems that have very little to no information ahead of time about what data needs to be stored.
Who uses FlatBuffers?
Cocos2d-x, the #1 open source mobile game engine, uses it to serialize all their game data.
Facebook uses it for client-server communication in their Android app. They have a nice article explaining how it speeds up loading their posts.
Fun Propulsion Labs at Google uses it extensively in all their libraries and games.
FlatBuffers is an efficient cross platform serialization library in for C++ and Java. It was created at Google specifically for game development and other performance-critical applications.
