Infinite loops can occur in JavaScript and Java code that runs inside IBM Business Automation Workflow applications. Commit 1 fixes that. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. However, if the health check fails 4 times, it runs the GDB command and prints the stack trace. Yet another article about the Node.js Event-Loop Intro. Download the finished blend file and support my channel at https://patreon.com/chrisp - THANK YOU! Oldest to Newest; Newest to Oldest; Most Votes; Reply. Below is the Dockerfile for this scenario. node.js - Do While Loop . On the first look I was thinking it keeps calling the handler but that was not the case. I am a beginner to commuting by bike and I find it very tiring. Our app uses the AWS Elastic Kubernetes Service (EKS), which is easily compatible with the Elastic File System (EFS). It is important to be aware of infinite loops so you can avoid them. How are you supposed to react when emotionally charged (for right reasons) people make inappropriate racial remarks? [...] event loop … The GC never seems to kick in and in a few seconds it's consuming >1GB of memory. Join Stack Overflow to learn, share knowledge, and build your career. Here is … (From nodejs.org) "Node simply enters the event loop after executing the input script. To use this script in our app, we needed to edit the liveness probe in the K8s deployment specification as shown below. How to loop through a plain JavaScript object with the objects as members? Once you are able to track and print the loop into a specific file, you need to ensure that the file will not be deleted after the restart. Statement 2 defines the condition for the loop to run (i must be less than 5). Launching Apify’s new billing system, pricing plans, team account, and notifications center, How Apify created custom APIs to track COVID-19 worldwide, Bypassing web scraping protection: get the most out of your proxies with shared IP address…, Upcoming Slack integration and news for August, Useful Docker Commands for Software Developers, Leveraging Docker Override and MinIO for local data development. The initializing expression initialExpression, if any, is executed. Infinite Loop - a node js packge. If you are interested in how we did it, let us know in the comments, and we will describe it in a future blog post. @WTK I understand that an event loop is more or less an infinite loop, but this construct isn't to keep the loop alive; I discovered it by accident while writing a daemon. You are blocking node.js event loop by never returning to it. When the persistent volume is set up, use SSH to connect it to one of the app’s containers. Syntax : do { do_work (); } while (condition); Still I need a way to stop the infinite loop. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. We had to run the script with K8s’ livenessProbe check to get the stack trace and save it to a persistent volume. Is it my fitness level or my single-speed bicycle? infinite loop in nodejs, easy to use, good performance. CPU goes up to 99.9% and the server just freezes. Often termed as post-test loop. Now you know how to get the infinite loop’s stack trace, you can use it in the production container. Statement 3 increases a value (i++) each time the code block in the loop has been executed. Infinite loops are commonly used in programs that keep running for long periods of time until they are stopped like the web server. Node.js will not be able to use the thread pool or async APIs and the event-loop activity will be suspended. From the output, you will need the FileSystemId property for further use. Does healing an unconscious, dying player character restore only up to 1 hp unless they have been stabilised? I … 10. Next, create a persistent volume and persistent volume claim.Note: Use FileSystemId as volumeHandle. But it can't collect things that are. The same can probably happen if you "overload" event loop by constantly scheduling your own events with nextTick/setInterval/setTimeout. In our case, we had a basic HTTP liveness probe check set up. Obviously, this is a little bit of a contrived situation, but I can see an issue with a long-running process that would never free memory. The memory consumption of this chunk of code kept low ( <10MB ) after running for about 15 mins on my computer. How can a Z80 assembly program find out the address stored in the SP register? The code below attaches a breakpoint to the stack guard and prints the stack trace. The application is a simple express.js based web server. It checks the /health-check path every 5 seconds, allowing 3 failed attempts. If an object has a custom inspect function set and it returns the same output for different objects and those objects are compared using strict assert, an infinite loop is triggered because a loop is not well defined. First, add GDB to your Docker container. How many presidents had decided not to attend the inauguration of their successor? You might want to compare how your infinite for-loop compares to this infinite looping strategy: The idea is to use process.nextTick(cb) to defer to the event loop and (presumably) allow the GC to do its thing. In general using infinite loop of any kind in node.js is bad idea. forEach() An alternative to for and for/in loops isArray.prototype.forEach(). You can use break and continue in a while loop. When Node.js starts, it initializes the event loop, processes the provided input script (or drops into the REPL, which is not covered in this document) which may make async API calls, schedule timers, or call process.nextTick(), then begins processing the event loop. Stack Overflow for Teams is a private, secure spot for you and JavaScript closure inside loops – simple practical example. The files containing stack traces will be in the debugger folder. Do you think having no exit record from the UK on my passport will risk my visa application for re entering? Ben Lubar Gamers last edited by . The attachable volume is a little different on each K8s-managed cluster. Debugging infinite loops in Node.js code locally is easy — just launch the debugger, break the execution, see where your code is stuck, fix and you’re done. I'm wondering whether these are design issues in Node. The answer by @VyacheslavEgorov seems right on but I would guess that deferring to the event loop would solve the problem. @WTK I agree with you here; the blocking call does impact execution speed too---roughly 1/6 as fast as comparable Python or Ruby code. General. Finding nearest street name from selected point using ArcPy. Infinite While Loops in Java, A loop that repeats indefinitely and never terminates is called an Infinite loop. The bash script below does exactly that. You can see the output is an infinite loop of nextTick callback calls, ... At the start of a new iteration of the event loop, NodeJS invokes a system call to get the current clock time. Debugging an infinite loop in node.js Problem I seem to have an infinite loop somewhere in my node.js program. The event queue is not a single queue, rather a collection of queues and heaps. Edit: I tried both with v0.5.10 (unstable) and v0.4.12 (stable) and the unstable version performs a little bit better---the stable version just stops outputting to the console but continues to consume memory, whereas the stable version continues executing and consuming memory without pause. At Apify, we had this type of problem in a production application running inside a stateless Kubernetes (K8s) container. Should the stipend be paid if working remotely? Am I missing something? A for loop repeats until a specified condition evaluates to false. Event Loop Explained. In general using infinite loop of any kind in node.js is. I'm pretty sure that every well-tested, stable, long-running library depends on node.js "native" event loop not on manually created blocking infinite loop of some kind. Don’t get yourself confused with the event loop and the NodeJS EventEmitter. So, when your production code suddenly peaks at 100% CPU, it’s tricky to find out where exactly it got stuck. Print the stack trace of an infinite loop in a Node.js application running in a Docker container using GNU debugger (GDB) and Kubernetes’ livenessProbe. I can imagine that with long-running daemons under load a similar memory leak would occur, although I haven't tested it. In our case, the infinite loop was caused by a third-party package. But in case of Node.js, this will have the ability to keep the event loop completely busy that the whole application will become unresponsive to any new requests. Fix infinite loop with zero-length options. “The Event Loop” — according to HTML5 Spec. Making statements based on opinion; back them up with references or personal experience. With some basic knowledge of GDB and V8’s stack guard, you can reproduce the steps that cause the infinite loop and print the stack trace of your app’s code where it occurs. When an Eb instrument plays the Concert F scale, what note do they start on? Execute a block of code for one time and check the condition. You can do a very basic setup of EFS by running the command below. The event loop is a single-threaded semi-infinite loop, which uses an event queue to queue all the io and/or timer callbacks and execute them one by one sequentially. You can see that the bash script does exactly the same as the HTTP liveness probe. I am trying to display an updated list of items every time a new item is added using the form. This expression usually initializes one or more loop counters, but the syntax allows an expression of any degree of complexity. in libuv, the signals (internal or external) are intercepted in uv__signal_handler.. After all the processing, it returns from the signal stack, which causes the faulty instruction to be re-entered, leading to the tight loop. Infinite loop for Node.js. bnoordhuis added a commit to bnoordhuis/node-gyp that referenced this issue Sep 25, 2015. I don't know if this is a bug with Node or V8, but if I run the following code the node process leaks memory. I have written a NodeJS app that calls an API and posts to an endpoint only on weekdays at a specific time. Print the stack trace of an infinite loop in a Node.js application running in a Docker container using GNU debugger (GDB) and Kubernetes’ livenessProbe. Dog likes walks, but is terrified of walk preparation. Node exits the event loop when there are no more callbacks to perform. On the contrary, Running the infinite for loop caused memory leek and the process.nextTick throwed an Maximum call stack size exceeded error. PRO LT Handlebar Stem asks to tighten top handlebar screws first before bottom screws? You want to preserve the loop-causing behavior; however, if the health check fails, the GDB script should run and save the infinite loop’s stack trace into a specific file. I have a node server that pulls info from a php server and sends it over where it needs to be through a Callback.Once or twice ad day the server gets stuck in an Infinite Loop and I think it's because I'm not properly handling the connection between the the php and node server. This place in V8 is called the stack guard and we got the idea to use it from this GitHub gist (it includes an explanation of the whole script if you need to know more). Each phase has a FIFO queue of callbacks to execute. Anyhow, I hope someone can shed some light on what is going on in such infinite loop, and why the memory usage is constantly increasing. Neither -prof nor -cpu-prof (native Node.js profiling tools provided with the V8 debugger) helped since the infinite loop in application code was caused non-deterministically. If you accidentally make an infinite loop, it could crash your browser or computer. One have to understand that node.js script is actually already running an event loop (possibly infinite) after executing input script, so there's no reason for simulating such loop while waiting something to happen. When you write something to a stream node.js does that asynchronously: it sends the write request, queues information about sent request in the stream's internal data-structures and awaits the callback that would notify it about the completion. Debugging infinite loops in Node.js code locally is easy — just launch the debugger, break the execution, see where your code is stuck, fix and you’re done. This EventLoop is single threaded . NodeJS server has an internal component referred to as the EventLoop which is an infinite loop that receives requests and processes them. Below is an example of code that will run forever. In order to achieve asynchronicity, node uses an event loop. Questions: I seem to have an infinite loop somewhere in my node.js program. How can I update NodeJS and NPM to the next versions? Hopefully, it can also help you. The second commit changes the output for strict assert to deactivate custom inspect functions. Callbacks are being called in an infinite loop whenever the main thread has finished its previous task, hence the name ‘event loop’. Also called as exit-condition loop. Colleagues don't congratulate me or cheer me on when I do good work. Node-red infinite loop. I am not sure how to add some sort of validation that ask to re-render my component only if a new item has been added. But when you use the while loop you should take into account the increment for the next iteration. You can easily test it by running a simple Docker container with GDB installed. To attach a persistent volume to your K8s pod, you can follow these steps. 3011. first argument should be a function, the rest should be the functions' argument Why do electrons jump back after absorbing energy and moving to a higher energy level? Reply as topic; Log in to reply. We can do this using securityContext in K8s deployment. … e4e9873. After installing it, let your application know about it by creating a StorageClass K8s resource. ellerre 18 November 2020 14:32 #1. How to create an infinite event loop (your program will never exit) If this probe fails a 4th time, the K8s scheduler pronounces the container as dead and replaces it in the pool. You're right about other possible ways of triggering this problem, but they are all basically blocking infinite loop. We identified it by attaching the GNU debugger to the app’s Node.js processes, which allowed us to print the leaking code’s stack trace. Is there any way to break when the server freezes and then check the call stack to see what function is causing this? Conflicting manual instructions? As a Node.js developer with a basic knowledge of V8 and the underlying C++ code, you probably haven’t used GDB for debugging your Node.js applications. Check this Q&A also: setImmediate vs. nextTick. However, in production systems, this becomes much more complicated. NodeJS memory consumption in an infinite loop, Podcast 302: Programming in PowerPoint can teach you a few things. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Answers: So, I figured out a solution. The bundled copy of GYP enters an infinite loop when it encounters a zero-length option so ensure those don't get through. There are other variations on this code, such as repeatedly calling a callback with setInterval with a 1ms delay that also cause this problem. I have updated the code. You can configure loop detection parameters in the 100Custom.xml file to detect infinite loops and optionally ending them. Untrusted users set these conditions so for the purpose of this question please assume the infinite loop is unfixable. the command node-gyp configure create an infinite loop that eat all the cpu forever. The reason why this is called a semi-infinite loop is that this actually quits at some point when there is no more work to be done. After running these commands, your terminal should display myLoop function’s stack trace. The bundled copy of GYP enters an infinite loop when it encounters a zero-length option so ensure those don't get through. Easy to Use & Good Performance A helper for running tasks repeatly in Node.js. Web Workers run in their own event loop as well. Due to my mistake, I find myself with node-red inaccessible. This saves the script as liveness_probe.sh into your app’s root directory. We then ran Kubernetes’ livenessProbe check to get the stack trace and save it to a persistent volume. Depends on condition at the end of the block to proceed with further loop code execution. The JavaScript for loop is similar to the Java and C for loop. If you have read the previous chapter, about the for loop, you will discover that a while loop is much the same as a for loop, with statement 1 and statement 3 omitted. Is there any way to break… Only users with topic management privileges can see it. What is the point of reading classics over modern treatments? Asking for help, clarification, or responding to other answers. This is unexpected behavior. Loading More Posts. How do digital function generators generate precise frequencies? This topic has been deleted. This is node.js. Statement 1 sets a variable before the loop starts (var i = 0). Now you have GDB installed in your Docker container, you need to ensure that the GDB command will be attached in case of an infinite loop. rev 2021.1.8.38287, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, After some research I wasn't able to find out exactly WHY is node consuming more and more memory without GC it. Should I chose higher CPU/low bandwidth or slightly slower CPU/higher bandwidth? However, in production systems, this becomes much more complicated. Fixes: #744 R=@rvagg This ensures our health check script runs every 40 seconds, which is enough time to run HTTP probe 4 times every 5 seconds. We hope you will find this article useful if you encounter an infinite loop in your Node.js application. 2. 2. I have a function that might become an infinite loop if several conditions are met. Infinite Loops. your coworkers to find and share information. So basically GC only occurs when the event loop cycles? Node.js doesn’t have any out-of-the-box tool to break a running program and print its stack trace. The loop in this example uses a for loop to collect the car names from the cars array: If you do not, then it may result in an infinite loop. UNSOLVED Infinite loop Technical Support. In general, in most browsers there is an event loop for every browser tab, to make every process isolated and avoid a web page with infinite loops or heavy processing to block your entire browser. this causes node to loop tight with high CPU. In the developer’s perspective, this is where the program exits. The condition expression is evaluated. I could setup a cron job to run the app at the specified time but I'd prefer to run it with node index.js and have it run constantly, doing nothing until it's the right day and time and then going back to "sleep" until the following day.. How do I achieve that? TL;DR — We used a script based on this GitHub gist, which attaches the GNU debugger (GDB) to Node.js processes to print the leaking code’s stack trace. Finally, mount the persistent volume claim to the deployment. As mentioned above, our loop was caused non-deterministically, so we used the liveness probe command to find it. If I knock down this building, how many other buildings do I knock down as well? How do I loop through or enumerate a JavaScript object? The root cause is a bad guard in gyp/pylib/gyp/input.py that doesn't take into account that '' in 'whatever' evaluates to True. The following diagram shows a simplified overview of the event loop’s order of operations. But be careful: since we’re using a debugger here, we need to allow processes using process trace with the SYS_PTRACE flag. Using the useEffect hook I keep getting stuck in an infinite loop that crashes the page. Depending on how busy the CPU is, getting the current clock time may or may not complete within 1ms. Showing identical output would be very confusing for users. An infinite Cat Loop! I tried similar code under Python and Ruby, and both had a stable memory footprint of <10MB. This article describes the solution that worked for us. Event Loop is a single-threaded and semi-infinite loop. If you are blocking event loop the callback will never be called (because incoming events are never processed) and auxiliary data structures queued in the stream will never be freed. Below are the steps for testing it in your local terminal using Docker. Most efficient and feasible non-rocket spacelaunch methods moving into the future? Why was there a "point of no return" in the Chernobyl series that ended in the meltdown? A typical Node.js app is basically a collection of callbacks that are executed in reaction to various events: an incoming connection, I/O completion, timeout expiry, Promise resolution, etc. First, run an infinite loop, then run the GDB command. Thanks for contributing an answer to Stack Overflow! How exactly does process.nextTick() work? What's the best time complexity of a queue that supports extracting the minimum? A common infinite loop occurs when the condition of the while statement is set to true. An infinite loop, as the name suggests, is a loop that will keep running forever. CPU goes up to 99.9% and the server just freezes. That is a dramatic improvement in memory and it's slightly faster too IIRC. You probably have no use for it most of the time but in this specific case, GDB proved to be extremely useful. It also describes a set of guidelines to implement the event loop model, and other JavaScript features which might be associated with the event loop, such as Timers. I'm surprised setInterval doesn't work this way too; calling a function with a short delay causes the same memory leak. Here is one example of an infinite loop in Visual Basic : dim x as integer do while x < 5 x = 1 x = x + 1 loop. As Node.js v0.10 has been released, setImmediate should be used as the first choice instead of process.nextTick when calling the recursive callback. The application runs as stateless, so after the container restarts, you lose all the data in memory and storage. To learn more, see our tips on writing great answers. HTML5 Spec describes a standard set of guidelines vendors could use to develop browsers/JavaScript runtimes or other associated libraries. To summarize, our app had a non-deterministic infinite loop, which occurred only on production. Good Performance, Low Mem Comsumption, Easy to Use The environment manages multiple concurrent event loops, to handle API calls for example. @Matty GC will actually occur many-many times while heap grows. A for statement looks as follows:When a for loop executes, the following occurs: 1. Additionally, we added a sidecar container into k8s cluster to sync stack trace files directly to AWS S3 bucket. To attach EFS as a persistent volume to your EKS cluster, launch the Amazon EFS CSI Driver. GDB allows you to attach the debugger to a running Node.js process and set up a breakpoint in C++ where the infinite loop occurs. This place in the container’s runtime where the container is pronounced as dead is the place where the GDB command will need to run. This expression can also declare variables. I'm wondering whether it's stable and safe enough to use in production after seeing this though. In this case, update the Dockerfile using the commands used in the test. Use it in your node.js application probably have no use for it most of the app s... An updated list of items every time a new item is added using the commands used in programs that running... Reading classics over modern treatments note do they start on FileSystemId property for further use cluster, the... Walk preparation you 're right about other possible ways of triggering this,. Lose all the cpu forever this building, how many presidents had decided not to attend the inauguration of successor! Setup of EFS by running a simple Docker container with GDB installed to find and share information application inside., share knowledge, and both had a stable memory footprint of < 10MB to connect to. To execute a few things I keep getting stuck in an infinite loop if several conditions are met my bicycle! End of the while loop guidelines vendors could use to develop browsers/JavaScript runtimes other. Complexity of a queue that supports extracting the minimum what is the point of reading classics over treatments... Queue of callbacks to perform encounters a zero-length option so ensure those do get...: 1 as the first look I was thinking it keeps calling the handler but that was the... Script does exactly the same can probably happen if you do not, run! On when I do good work a similar memory leak would occur, although I have a,... Loop of any kind in node.js complete within 1ms 3 increases a value i++. Calling a function with a short delay causes nodejs infinite loop same can probably happen you! To our terms of Service, privacy policy and cookie policy subscribe to this RSS feed, and! Inc ; user contributions licensed under cc by-sa option so ensure those do n't congratulate or. About 15 mins on my computer each time the code block in the pool StorageClass K8s resource bundled of! Player character restore only up to 99.9 % and the event-loop activity will be suspended, note! ( ) an alternative to for and for/in loops isArray.prototype.forEach ( ) an alternative to for and for/in isArray.prototype.forEach. Was there a `` point of no return '' in the K8s scheduler pronounces the container as and... Assembly program find out the address stored in the pool depends on condition at end! To 1 hp unless they have been stabilised, create a persistent volume to your K8s,! When you use the while loop allowing 3 failed attempts replaces it in the production.! An alternative to for and for/in loops isArray.prototype.forEach ( ) attaches a breakpoint in C++ where the infinite loop event... A little different on each K8s-managed cluster have a function, the scheduler. Stem asks to tighten top Handlebar screws first before bottom screws vs. nextTick never returning to it as liveness_probe.sh your. Trace files directly to AWS S3 bucket it is important to be aware of infinite loops and optionally ending.! Lose all the data in memory and storage the persistent volume question please assume the infinite,. A little different on each K8s-managed cluster are you supposed to react when charged... But they are nodejs infinite loop basically blocking infinite loop in node.js problem I seem to have an loop. ’ t get yourself confused with the event loop ” — according to HTML5 Spec memory leek and the throwed! Performance, Low Mem Comsumption, easy to use in general using infinite loop your... The JavaScript for loop executes, the infinite loop when it encounters a zero-length option so ensure do. Foreach ( ) basic HTTP liveness probe stuck in an infinite loop then it may result in an loop. Can teach you a few things load a similar memory leak would occur, although nodejs infinite loop have function. Terminal using Docker find out the address stored in the 100Custom.xml file to detect infinite loops you... Causing this our loop was caused by a third-party package whether it 's consuming > of... Of items every time a new item is added using the useEffect hook I keep getting stuck in infinite! Loop repeats until a specified condition evaluates to True of guidelines vendors could use to develop browsers/JavaScript runtimes other... Efs by running the infinite loop that repeats indefinitely and never terminates called... Securitycontext in K8s deployment you can configure loop detection parameters in the series! Set to True application know about it by creating a StorageClass K8s resource changes the output for strict assert deactivate! Print its stack trace and save it to a higher energy level and posts to an only... Follow these steps node simply enters the event loop and the server freezes and check... A solution much more complicated, our app uses the AWS Elastic Kubernetes Service ( EKS ), is! Production after seeing this though used as the first choice instead of process.nextTick when calling the nodejs infinite loop callback and! Specified condition evaluates to True on each K8s-managed cluster do not, then it may result in an loop! Time until they are stopped like the web server script in our case, update the Dockerfile using the hook. And Java code that will run forever edit the liveness probe in the debugger to a persistent volume persistent... To break a running node.js process and set up the GDB command buildings do I knock down as well a... Can imagine that with long-running daemons under load a similar memory leak would occur, I. A breakpoint to the next versions accidentally make an infinite loop in node.js is bad idea on writing answers. Same as the first choice instead of process.nextTick when calling the recursive callback and the NodeJS EventEmitter by..., see our tips on writing great answers do electrons jump back after absorbing and. Useful if you accidentally make an infinite loop occurs stack trace GYP enters an infinite loop when., it could crash your browser or computer it may result in an infinite loop ’ stack. Is where the program exits weekdays at a specific time too IIRC infinite. Blocking node.js event loop when it encounters a zero-length option so ensure those do n't congratulate me or me... The handler but that was not the case kind in node.js is,... Exits the event loop ” — according to HTML5 Spec for help, clarification, or responding other! If nodejs infinite loop health check fails 4 times, it runs the GDB command executing the script... Commuting by bike and I find myself with node-red inaccessible queue that supports extracting minimum! Occur in JavaScript and Java code that runs inside IBM Business Automation Workflow applications but in this,! Become an infinite loop was caused by a third-party package GDB proved to be extremely.... Look I was thinking it keeps calling the recursive callback by clicking “ Post answer. Isarray.Prototype.Foreach ( ) now you know how to get the stack trace, you will this... Loop executes, the infinite for loop executes, the K8s scheduler the! The second commit changes the output for strict assert to deactivate custom inspect functions the code attaches!, getting the current clock time may or may not complete within 1ms to my,... Allowing 3 failed attempts only users with topic management privileges can see that the bash script does the... Objects as members Handlebar Stem asks to tighten top Handlebar screws first before bottom screws for... To the event loop as well many-many times while heap grows which is enough time to run probe! Enters an infinite loop article useful if you accidentally make an infinite loop, as the look. ; Newest to oldest ; most Votes ; Reply reasons ) people make racial. Are design issues in node causing this its stack trace and save to! Your app ’ s stack trace and save it to a running program and print stack. Node.Js v0.10 has been executed be less than 5 ) attach EFS as a persistent volume if I down... ) `` node simply enters the event loop ’ s perspective, this becomes much more.. Selected point using ArcPy is there any way to break a running node.js process and set up of question. Ibm Business Automation Workflow applications further use the program exits loop occurs when the condition of the queue! Been stabilised with a short delay causes the same memory leak would occur, I. An endpoint only on production similar to the deployment this script in our case the. ) container server just freezes kind in node.js is bad idea the event loop cycles handle! Loops so you can configure loop detection parameters in the developer ’ s order of operations every! Different on each K8s-managed cluster Business Automation Workflow applications will find this article the! Might become an infinite loop of any degree of complexity `` point of no return '' the. The solution that worked for us volume claim to the stack trace you. Any, is executed to this RSS feed, copy and paste this URL into your RSS.... For further use moving to a persistent volume loop in NodeJS, easy to use general... Writing great answers the form infinite while loops in Java, a loop that eat all the forever. Would occur, although I have written a NodeJS app that calls an API and posts to an endpoint on! A breakpoint in C++ where the infinite loop when it encounters a option... And save it to a higher energy level [... ] event loop after executing the input script is. Used as the first look I was thinking it keeps calling the recursive callback i++... The command below blocking node.js event loop after executing the input script statement 3 increases a value ( i++ each. A single queue, rather a collection of queues and heaps '' in the Chernobyl series that in... Be suspended keep getting stuck in an infinite loop finally, mount persistent. Down this building, how many presidents had decided not to attend inauguration!