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节省磁盘空间是放弃迁移到标准文本格式（例如JSON）的正当理由吗？
A while ago I asked a question about custom text data formats, instead of using existing tools such as XML, JSON, YAML, etc. Now, in favor of converting 如何开始在 OlympTrade 上获利 our custom format to a relational database and some segments of JSON (in a JSON field), I'm running into the problem of 'data bloat'. By this I mean that 如何开始在 OlympTrade 上获利 there will be a lot of increase in duplication for the JSON (of which 如何开始在 OlympTrade 上获利 there is quite a bit, because much of the system needs to be flexible in different environments). For example, the part of the custom text format:
A lot of 如何开始在 OlympTrade 上获利 these JSON property names are now extra bloat, e.g. more_data , id , description , which are duplicated across millions of JSON entries; we'll more than quadruple our data storage requirements. However, 如何开始在 OlympTrade如何开始在 OlympTrade 上获利 上获利 that only ends up being about 100 MB over our previous 25 MB, for a lot more flexibility and sanity. Granted, this is a mobile app, so 75 如何开始在 OlympTrade 上获利 MB could shock some users once we transition - "why does this app now take up 4x as much space with no additional features?". The custom format keeps things 如何开始在 OlympTrade 上获利 nice and compact, but obviously parsers have to be maintained, and the data can't be queried efficiently on anything other than a few primary fields (which are all manually indexed. by the way).
Edit: To clarify some comments and an answer: the data that I have is highly relational, except for some 'tag'-like information that varies per database row; that is to say, 90% of our custom format can be converted 如何开始在 OlympTrade 上获利 to a relational structure, but the other 10% is the 'tag', which is unstructured and 如何开始在 OlympTrade 上获利 can vary per record. These 'tags' carry semantic information that is relevant for users, but would never be queried on. And because it is unstructured, JSON seems like the 如何开始在 OlympTrade 上获利 如何开始在 OlympTrade 上获利 best fit. I should also note that the tags can be (theoretically) infinitely varying in their structure, though there are still commonalities across tags (for instance id and description are usually common to all). It would not, however, be feasible to have an explicitly structured XXXTag join table for each variation of the JSON; I initially thought it would be a good idea, to alleviate the issue in the question that I'm 如何开始在 OlympTrade 上获利 asking right now, but the number of join tables is theoretically infinite, which makes me 如何开始在 OlympTrade 上获利 think JSON is appropriate for the problem. The JSON would only be a single column in a relational table, which is a small portion of the data as a 如何开始在 OlympTrade 上获利 whole. I'm sorry for being so vague with this, but I can't make my question specific enough to identify the actual project that I'm working on.
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