My spring application does a rest request to a server and the response from the server is a JSONObject string. The JSON string is very huge(200MB). I want to convert the json string to a JSONObject. Below are my code for conversion:
exchange = restTemplate.exchange(Url, HttpMethod.POST, postEntity, String.class);
jsonObject = objectMapper.readValue(exchange.getBody(), JSONObject.class);
For a single request, it is taking 3-5 seconds for conversion. But, if there are multiple requests the conversion is taking so much time (60 seconds for 8-10 requests in parallel). Is there any better way to do this?
I'd say that transforming a 200MB chunk of JSON to an object using jackson-databind's ObjectMapper
will almost always consume a lot of computing time and furthermore huge amounts of memory.
If you don't need the whole object represented by the JSON in memory at a single time, ie chunks of it will suffice, I would advise to switch to an approach that utilizes jackson's streaming API . You can combine it with databind on smaller subsets of the JSON, passing the resulting DTOs to some consumer (kind of visitor pattern).
I hope this is of any help for your special use-case.
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