Is Espruino right for my project?

In Espruino's console, I made some initial memory tests.

I set the

to what the server delivers as JSON string. This used 137 variable elements of 2250 total.

Then I set the responseObect to the JSON parsed responseText:

var responseObj = JSON.parse(responseText);```
This used another 240 variable elements of 2250 total.

No code (except the variable references) - just the response string and response JS object use 377 variable elements of 2250, leaving 1837 for all the other things.

A variable element is a number of bytes and is also a garbage collection entity (btw, strings are chained memory elements... so not contiguous memory bytes by definition, and therefore concatenation is quite 'simple' and effective) - Espruino has separate Web pages about implementation, performance, memory usage.

This is from Espruino's Web IDE console:

>process.memory();
={ "free": 2219, "usage": 31, "total": 2250, "history": 21,
  "stackEndAddress": 536909756, "flash_start": 134217728, "flash_binary_end": 207484, "flash_code_start": 134443008, "flash_length": 262144 }
>var responseText='{"generatedAt":"2015-01-11T21:29:18.7728461+00:00","locationName":"Reading","crs":"RDG","platformAvailable":true,"nrccMessages":"","trainServices":[{"origin":{"locationName":"Bristol Temple Meads","crs":"BRI"},"destination":{"locationName":"London Paddington","crs":"PAD"},"std":"21:20","etd":"21:28","platform":"15","serviceID":"r9ccnXCZphVkCGddcS7usw==","subsequentCallingPoints":[{"locationName":"London Paddington","st":"22:05","et":"On time"}],"operator":"First Great Western","operatorCode":"GW"},{"origin":{"locationName":"Didcot Parkway","crs":"DID"},"destination":{"locationName":"London Paddington","crs":"PAD"},"std":"21:27","etd":"21:32","platform":"15","serviceID":"Gy57d\/+itMP4lsK2ot8HAQ==","subsequentCallingPoints":"","operator":"First Great Western","operatorCode":"GW"},{"origin":{"locationName":"London Paddington","crs":"PAD"},"destination":{"locationName":"Didcot Parkway","crs":"DID"},"std":"21:27","etd":"On time","platform":"12","serviceID":"ew4MkXo5cIVDvxHkrFnaYw==","subsequentCallingPoints":"","operator":"First Great Western","operatorCode":"GW"},{"origin":{"locationName":"London Paddington","crs":"PAD"},"destination":{"locationName":"Exeter St Davids","crs":"EXD"},"std":"21:31","etd":"On time","platform":"7","serviceID":"vil6sUouIa4aG4JGvcCtmA==","subsequentCallingPoints":"","operator":"First Great Western","operatorCode":"GW"}]}';
="{\"generatedAt\":\"2" ... "atorCode\":\"GW\"}]}"
>process.memory();
={ "free": 2102, "usage": 148, "total": 2250, "history": 143,
  "stackEndAddress": 536909756, "flash_start": 134217728, "flash_binary_end": 207484, "flash_code_start": 134443008, "flash_length": 262144 }
>var responseObj = JSON.parse(responseText);
={
  "generatedAt": "2015-01-11T21:29:18.7728461+00:00",
  "locationName": "Reading",
  "crs": "RDG",
  "platformAvailable": true,
  "nrccMessages": "",
  "trainServices": [
    {
      "origin": {
"locationName": "Bristol Temple Meads",
"crs": "BRI"
       },
      "destination": {
"locationName": "London Paddington",
"crs": "PAD"
       },
      "std": "21:20",
      "etd": "21:28",
      "platform": "15",
      "serviceID": "r9ccnXCZphVkCGddcS7usw==",
      "subsequentCallingPoints": [
{
  "locationName": "London Paddington",
  "st": "22:05",
  "et": "On time"
 }
       ],
      "operator": "First Great Western",
      "operatorCode": "GW"
     },
    {
      "origin": {
"locationName": "Didcot Parkway",
"crs": "DID"
       },
      "destination": {
"locationName": "London Paddington",
"crs": "PAD"
       },
      "std": "21:27",
      "etd": "21:32",
      "platform": "15",
      "serviceID": "Gy57d/+itMP4lsK2ot8HAQ==",
      "subsequentCallingPoints": "",
      "operator": "First Great Western",
      "operatorCode": "GW"
     },
    {
      "origin": {
"locationName": "London Paddington",
"crs": "PAD"
       },
      "destination": {
"locationName": "Didcot Parkway",
"crs": "DID"
       },
      "std": "21:27",
      "etd": "On time",
      "platform": "12",
      "serviceID": "ew4MkXo5cIVDvxHkrFnaYw==",
      "subsequentCallingPoints": "",
      "operator": "First Great Western",
      "operatorCode": "GW"
     },
    {
      "origin": {
"locationName": "London Paddington",
"crs": "PAD"
       },
      "destination": {
"locationName": "Exeter St Davids",
"crs": "EXD"
       },
      "std": "21:31",
      "etd": "On time",
      "platform": "7",
      "serviceID": "vil6sUouIa4aG4JGvcCtmA==",
      "subsequentCallingPoints": "",
      "operator": "First Great Western",
      "operatorCode": "GW"
     }
   ]
 }
>process.memory();
={ "free": 1873, "usage": 377, "total": 2250, "history": 149,
  "stackEndAddress": 536909756, "flash_start": 134217728, "flash_binary_end": 207484, "flash_code_start": 134443008, "flash_length": 262144 }
> 

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