Computer data logging is the process of recording events in a computer program, usually with a certain scope, in order to provide an audit trail that can be used to understand the activity of the system and to diagnose problems.

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3answers
83 views

Allowing the user to specify the location of a logfile

I'm working on an application, and adding logging, but now I'm stuck. I want to allow (not force!) the user to set the location of the logfile. Basically, my problem is: logger initialization ...
2
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2answers
138 views

Where should tests' log files go?

My application has a rather non-trivial, yet standard, log configuration. It includes a console appender and a rolling size-based file appender. When I'm running the tests, thru the IDE or with ...
2
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2answers
827 views

Centralized and decentralized logging mechanisms

I've worked different kind of applications both having centralized and decentralized logging mechanisms. I feel centralized logging mechanism is good to see the proper flow of code and timing of ...
2
votes
1answer
412 views

tail-like view on HTML logfiles

I'm working on an application that creates HTML log files. I'm tired of having to manually reload and scroll to the bottom in the browser to see the latest entries. A solution that does not really ...
2
votes
1answer
259 views

What is the best way to track / record the current programming project you work on? [duplicate]

I have been in this problem for long time and I want to know how it's done in real / big companies project? Suppose I have the project to build a website. Now I divide the project into sub tasks and ...
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5answers
844 views

Is SQLite a sensible option for data logging?

I am trying to setup a small data-logging application under linux. The data arrives via serial port, and from there it should be pumped to logging and to graphical display. The logging functionality ...
1
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2answers
90 views

Logging events for reporting purposes

Are there any design patterns or best practices around logging events for use in reporting and BI systems. For example in a system which manages orders from a website, it would be beneficial if a ...
1
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3answers
223 views

Exception when logging exception: is it correct to ignore them?

My question is specific to php, but i think it can be useful in other languages. I log into a table all the exception a code can throw: try{ //Some code } catch (Exception $e) { $log = new ...
1
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1answer
83 views

Is there any reason not to include issue numbers in debug logs?

I was going through the answers to this question: What information must never appear in logs? And noticed that nobody mentioned this particular attribute. It's something I find useful- whenever any ...
1
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2answers
347 views

log4cxx: is it a stable option to include as part of distributed library? [closed]

We are porting our Java API library to C++. (Our target platforms are Linux and Windows.) Since we have minimal C++ experience, the learning curve has been pretty steep, but overall we have been able ...
1
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1answer
140 views

How to unit test a class which is just an adapter that logs input and output to a third-party library?

I have the following (in C#, but the question could also apply to Java): public interface ILibraryAdapter { string Property1 { get; } string Method1(string param1); ... } public class ...
1
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1answer
160 views

Logging in a distributed system

We have several application servers (and different applications) running on Amazon AWS and our main method of logging is a combination of statsd, carbon/graphite, and an alert system based off of the ...
1
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1answer
532 views

How to design a log() method that can easily be accessed from the outside of the Console class?

Recently my team has programmed a custom developer console in a video game which can easily be hidden or displayed, because it's more comfortable and less of a hassle. The Console class contains a ...
1
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3answers
93 views

Communicating details of method result?

I have code like this (pseudocode) foreach(Box box in boxes) { if(boxFilter.PassesFilter(box)) { // do something useful } else { Log.Log(format("Box %s was rejected", ...
1
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2answers
81 views

Logging page/session ID in an inner module

We have a C# ORM module that generates queries. It logs generated queries and other information into the error/trace file. It is used by our web application. Most of our queries are generated ...
1
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2answers
115 views

Strategy to store/average logs of pings

I'm developing a site to monitor web services. The most basic type of check is sending a ping, storing the response time in a CheckLog object. By default, PingCheck objects are triggered every minute, ...
1
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3answers
700 views

Opinions on logging in multiprocess applications

We have written an application that spawns at least 9 parallel processes. All processes generate a lot of logging information. Currently we are using Pythons QueueHandler to consolidate all logs ...
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2answers
398 views

Logging asynchronously - how should it be done?

In many of the services I work on there are a lot of logging being done. The services are WCF services(mostly) which use the .NET EventLogger class. I'm in the process of improving these services' ...
1
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3answers
311 views

Maintaining log stream after file name change

I'm trying to log to a file and move it about every 30 seconds. I'm using the os.rename function (which I do from a supervisord process) in python to move the current log to a timestamped log (which ...
1
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2answers
215 views

Event based logging. Is it a good idea and is it ok to pass a handle to a “logged” object?

Hi I have fairly complex program that is doing computations in a quite large loop. I want to log some basic statistic about the run to be able to analyze its performance over time and vs loop number. ...
1
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1answer
116 views

Strategy for clients to retrieve real-time log from HTTP server

I have an HTTP Server Service application which has its own logging mechanism. It's written in Delphi. I would like to provide a way for multiple clients to connect to this service and get a real-time ...
0
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2answers
288 views

Is storing stack traces in database recommended?

The current system I am working on goes through a set of documents & performs some logic using the metadata of the document. If the metadata of a document is fishy..it throws an exception. The ...
0
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2answers
119 views

finding patterns into logs

I am trying to put together a way to figure out if incidents occurred based on log content. Typically, on log (or db table) would contain a list of transactions composed as follow: {Timestamp} ...
0
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1answer
134 views

Design patterns to avoiding breaking the SRP while performing heavy data logging

A class that performs both computations and data logging seems to have at least two responsibilities. Given a system for which the specifications require heavy data logging, what kind of design ...
0
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2answers
88 views

Way for java program to read file from when it was stopped

I am working on an application that reads a log file, looks for a specific string, sends alert emails and saves data from the file into a database. The reading functionality is working well, but I am ...
0
votes
1answer
95 views

How should I handle measurement logging in my Discrete Event Simulation engine?

I'm attempting to build a Discrete Event Simulation library by following this tutorial and fleshing it out. How should I handle logging metrics in my Discrete Event Simulation engine? If you don't ...
0
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1answer
33 views

Logging system interactions as a user vs as a flag

When running a site that has a CRM with a logging facility that logs users interactions (someone changing a name, address or user permission etc), is it better to log system interactions (automated ...
0
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1answer
77 views

debugging web applications using debug parameter

A suggestion has been made by a team member to leave all debug code intact in our web pages... and then to create a variable that can be turned on / off to enable / disable debugging. This is a ...
0
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1answer
199 views

processing Postfix log with python

I need to process all log messages from Postfix (/var/log/mail/mail.log), and print a summary/statistics (how many emails were sent/received and from/to which email addresses) The situation is made ...
0
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1answer
441 views

What factors should I consider when logging a (JSF) web-app?

I've recently read the article The Problem with logging and was wondering about my current logging strategy. Usualy I use Log4J in my projects and just have to decide which line/attributes I would ...
0
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0answers
15 views

Generic log analyzer that produces reports

About 600 customers use our application. We have very detailed logs for everything that happens in the application, from changes in the data model, memory and CPU/GPU usage to clicks on the UI ...
0
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0answers
24 views

How do I implement the OpsDB from Release It! by Michael T Nygard

I have recently been reading the Release It! book by Michael T Nygard.In the book he talks about Implementing an OpsDB to manage and record performance statistics of applications. Has anyone ...
0
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3answers
69 views

One Event Sent to Multiple Listeners, Want to Log Notification Once

I have a system in place where a Cache is made up of many Cache Nodes. When one is added, a CacheNodeAdded event is raised by the Cache. The Cache has a redundant set of Monitors listening for ...
0
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0answers
29 views

Offload traces into shared memory

There is a task to trace thread execution activity for posthumous analysis with minimum impact on latency/performance. Stack trace might be not enough to understand the reason of crash. Initially I ...
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2answers
2k views

How to do logging in console application [closed]

I have a simple console application that will be deployed as a scheduled job. Below is its pseudo code Main(string[] args) { //get xml string from database Reports reports = ...
-1
votes
3answers
294 views

Good logging technique for small projects on Java [duplicate]

When I'm coding small projects, I often use System.out.println to print valuable info. It's simple, easy and gets me info. The only drawback I found is that there is no simple way to disable parts of ...
-1
votes
1answer
114 views

Who actually performs the task of log rotation?

I know log rotation is a feature seen in application servers like Oracle's Weblogic. I would like to understand: What is actually meant by log rotation? What is it useful? Who performs the task? ...
-2
votes
1answer
84 views

What is the best way to get a method name in runtime?

Here is a little background of my problem: I implemented a singleton logger class which is being called from several projects. I want to log the name of the class as well as the name of the method ...
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votes
3answers
306 views

What's the meaning of “the Sun defect” and how does it differ from the more generic “NIH syndrome”? [closed]

I hear people talking about the "Sun defect", often giving the whole mess around logging as an example. How is it different from the not-invented-here syndrome, which means uselessly duplicating ...