mempool/backend/package.json

{
  "name": "mempool-backend",
  "version": "2.0.0",
  "description": "Bitcoin mempool visualizer and blockchain explorer backend",
  "license": "GNU Affero General Public License v3.0",
  "homepage": "https://mempool.space",
  "repository": {
    "type": "git",
    "url": "git+https://github.com/mempool/mempool"
  },
  "bugs": {
    "url": "https://github.com/mempool/mempool/issues"
  },
  "keywords": [
    "bitcoin",
    "mempool",
    "blockchain",
    "explorer",
    "liquid"
  ],
  "main": "index.ts",
  "scripts": {
    "ng": "./node_modules/@angular/cli/bin/ng",
    "tsc": "./node_modules/typescript/bin/tsc",
    "build": "npm run tsc",
    "start": "node --max-old-space-size=2048 dist/index.js",
    "start-production": "node --max-old-space-size=4096 dist/index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "dependencies": {
    "@mempool/bitcoin": "^3.0.2",
    "@mempool/electrum-client": "^1.1.7",
    "axios": "^0.21.1",
    "bitcoinjs-lib": "^5.2.0",
    "crypto-js": "^4.0.0",
    "express": "^4.17.1",
    "locutus": "^2.0.12",
    "mysql2": "2.2.5",
    "node-worker-threads-pool": "^1.4.3",
    "ws": "^7.4.4"
  },
  "devDependencies": {
    "@types/compression": "^1.0.1",
    "@types/express": "^4.17.2",
    "@types/locutus": "^0.0.6",
    "@types/ws": "^6.0.4",
    "tslint": "^6.1.0",
    "typescript": "^4.1.5"
  }
}
Initial code commit. 2019-07-21 17:59:47 +03:00			`{`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`"name": "mempool-backend",`
			`"version": "2.0.0",`
			`"description": "Bitcoin mempool visualizer and blockchain explorer backend",`
Update package.json license tags 2021-03-18 16:29:11 +09:00			`"license": "GNU Affero General Public License v3.0",`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`"homepage": "https://mempool.space",`
			`"repository": {`
			`"type": "git",`
Add new package.json for top-level mempool project 2020-03-13 19:51:25 +09:00			`"url": "git+https://github.com/mempool/mempool"`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`},`
			`"bugs": {`
			`"url": "https://github.com/mempool/mempool/issues"`
			`},`
			`"keywords": [`
			`"bitcoin",`
			`"mempool",`
			`"blockchain",`
			`"explorer",`
			`"liquid"`
			`],`
Initial code commit. 2019-07-21 17:59:47 +03:00			`"main": "index.ts",`
			`"scripts": {`
Same npm fix for running `tsc` from `./node_modules` for backend 2020-11-23 17:26:22 +09:00			`"ng": "./node_modules/@angular/cli/bin/ng",`
			`"tsc": "./node_modules/typescript/bin/tsc",`
			`"build": "npm run tsc",`
Reduce backend heap size setting to 2G since cache memory usage was optimized (#345) On powerful servers, nodejs automatically sets the limit at 4GB ``` % node -e 'console.log(`node heap limit = ${require("v8").getHeapStatistics().heap_size_limit / (1024 * 1024)} Mb`)' node heap limit = 4144 Mb ``` On a Raspberry Pi with 8GB RAM, nodejs automatically sets the limit at 1GB ``` % node -e 'console.log(`node heap limit = ${require("v8").getHeapStatistics().heap_size_limit / (1024 * 1024)} Mb`)' node heap limit = 1048 Mb ``` On a Raspberry Pi with 4GB RAM, nodejs automatically sets the limit at 740MB ``` % node -e 'console.log(`node heap limit = ${require("v8").getHeapStatistics().heap_size_limit / (1024 * 1024)} Mb`)' node heap limit = 739.4694900512695 Mb ``` After testing with manually setting the limit to 768MB, mempool starts up fine, but crashes when saving the cache when the mempool is quite large (over 400MB with custom bitcoin.conf setting). So it's probably safe to reduce the 4GB limit setting to 2GB for all devices and and just use the automatically set values, now that the backend's disk cache memory usage was recently optimized. However, a new npm script for `npm run start-production` will be added so we can keep our production mempool.space servers running with a very large bitcoin.conf mempool 2021-02-15 00:25:29 +09:00			`"start": "node --max-old-space-size=2048 dist/index.js",`
			`"start-production": "node --max-old-space-size=4096 dist/index.js",`
Update package.json for mempool-backend 2020-03-13 19:44:56 +09:00			`"test": "echo \"Error: no test specified\" && exit 1"`
Initial code commit. 2019-07-21 17:59:47 +03:00			`},`
			`"dependencies": {`
Basic bitcoind/romanz-electrum support to sync the mempool and blocks. 2020-12-20 22:36:36 +07:00			`"@mempool/bitcoin": "^3.0.2",`
Switching Electrum Client lib supporting auto reconnect. 2020-12-29 00:41:02 +07:00			`"@mempool/electrum-client": "^1.1.7",`
npm audit fix 2021-01-11 16:04:16 +07:00			`"axios": "^0.21.1",`
Adding bitcoinJS-lib and parse P2SH and P2WSH scripts. 2021-01-06 01:36:28 +07:00			`"bitcoinjs-lib": "^5.2.0",`
Address page mostly working. 2020-12-22 06:04:31 +07:00			`"crypto-js": "^4.0.0",`
Revert "Lock NPM versions." This reverts commit b544af14e435c6a180d111473b27841ae15e1090. 2020-10-26 20:56:55 +09:00			`"express": "^4.17.1",`
			`"locutus": "^2.0.12",`
Upgrading mysql client lib. 2021-01-30 21:39:23 +07:00			`"mysql2": "2.2.5",`
Upgrading all front and backend dependencies, including Angular 11. fixes #429 2021-04-07 16:18:55 +04:00			`"node-worker-threads-pool": "^1.4.3",`
			`"ws": "^7.4.4"`
Initial code commit. 2019-07-21 17:59:47 +03:00			`},`
			`"devDependencies": {`
Revert "Lock NPM versions." This reverts commit b544af14e435c6a180d111473b27841ae15e1090. 2020-10-26 20:56:55 +09:00			`"@types/compression": "^1.0.1",`
			`"@types/express": "^4.17.2",`
			`"@types/locutus": "^0.0.6",`
Replacing request.js with axios fixes #153 2020-11-15 14:22:47 +07:00			`"@types/ws": "^6.0.4",`
Upgrading all front and backend dependencies, including Angular 11. fixes #429 2021-04-07 16:18:55 +04:00			`"tslint": "^6.1.0",`
			`"typescript": "^4.1.5"`
Initial code commit. 2019-07-21 17:59:47 +03:00			`}`
			`}`