/*
This example shows synchronous execution, blocking code.
console.log(contents); blocks process and that's why
console.log('Do something else!'); must wait
Max file that didn't crash nodeJS had 350MB
*/
//load modules
var fs = require('fs');
//synchronous file reading
var content = fs.readFileSync('./testfiles/largefile350mb.txt', 'utf8');
console.log(content);
//here process is blocked while file is not read completely. After that next console.log(); continue
console.log('Do something else!');
/*
Conclusion: Due to asynchronous execution, first is file dumped then appear 'Do something else'.
That's because console.log('Do something else!'); waits fs.readFileSync('largefile350mb.txt', 'utf8'); to be finished.
*/
$ps -aux | grep node (list all node processes) sasa 1208 0.3 0.4 1304744 71992 ? Ssl 2025 1190:41 node /home/sasa/dex8/dex8-panel/server/index.js sasa 1236 0.5 0.6 11823444 106492 ? Ssl 2025 1881:11 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js sasa 1257 0.3 0.4 1302792 69204 ? Ssl 2025 1207:08 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js sasa 1289 0.3 0.4 1298172 67592 ? Ssl 2025 1188:50 node /home/sasa/dex8/dex8-kiosk/server/index.js sasa 1363 4.3 2.8 12251344 460972 ? Ssl 2025 15113:15 node /home/sasa/voovuu/voovuu-pub/server/index.js sasa 1886 5.8 3.5 12247984 586476 ? Ssl 2025 20279:00 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index. sasa 55678 0.3 0.3 1098332 63344 ? Ssl 04:02 0:45 node /home/sasa/dex8/dex8-worker/starter.js www-data 72284 0.0 0.0 2608 592 ? S 07:51 0:00 sh -c ps -aux | grep node www-data 72286 0.0 0.0 3304 724 ? S 07:51 0:00 grep node sasa 1214480 0.3 0.7 22311168 125528 ? Ssl 2025 950:24 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214483 0.3 0.4 1102080 66484 ? Ssl 2025 856:44 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214536 0.3 0.4 1101316 65956 ? Ssl 2025 855:10 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214544 0.3 0.4 1101544 66112 ? Ssl 2025 861:49 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214588 0.3 0.3 1101316 65492 ? Ssl 2025 857:27 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214617 0.3 0.4 1100672 66364 ? Ssl 2025 854:43 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214641 0.3 0.3 1166952 65236 ? Ssl 2025 845:18 node /home/sasa/dex8/dex8-worker/starter.js sasa 1214671 0.3 0.3 1100128 64368 ? Ssl 2025 841:53 node /home/sasa/dex8/dex8-worker/starter.js sasa 1215731 0.6 0.7 11844444 126132 ? Ssl 2025 1767:46 node /home/sasa/dex8/dex8-api/starter.js sasa 1216489 0.3 0.3 1101304 64676 ? Ssl 2025 854:23 node /home/sasa/dex8/dex8-worker/starter.js sasa 1399960 0.8 0.6 11806988 109200 ? Ssl Apr20 753:44 node /home/sasa/dex8/dex8-www/server/index.js sasa 1631573 0.4 0.4 1303608 80480 ? Ssl May31 143:25 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr sasa 1904154 0.6 0.9 11865156 148432 ? Ssl Apr25 515:52 node /home/sasa/miko/miko-hr/server/index.js sasa 2628167 0.8 0.8 1177052 131768 ? Ssl 2025 2696:07 node /home/sasa/voovuu/voovuu-api/starter.js sasa 3168557 0.6 0.6 11815640 104936 ? Ssl 2025 2017:43 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js sasa 3169051 0.5 0.5 11799488 84716 ? Ssl 2025 1678:29 node /home/sasa/@mikosoft/dodo-examples/server/index.js sasa 3264954 0.7 0.5 1332680 86172 ? Ssl Feb21 1235:38 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js