diff --git a/c#/.gitignore b/c#/.gitignore new file mode 100644 index 0000000..2afa2e2 --- /dev/null +++ b/c#/.gitignore @@ -0,0 +1,454 @@ +## Ignore Visual Studio temporary files, build results, and +## files generated by popular Visual Studio add-ons. +## +## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore + +# User-specific files +*.rsuser +*.suo +*.user +*.userosscache +*.sln.docstates + +# User-specific files (MonoDevelop/Xamarin Studio) +*.userprefs + +# Mono auto generated files +mono_crash.* + +# Build results +[Dd]ebug/ +[Dd]ebugPublic/ +[Rr]elease/ +[Rr]eleases/ +x64/ +x86/ +[Ww][Ii][Nn]32/ +[Aa][Rr][Mm]/ +[Aa][Rr][Mm]64/ +bld/ +[Bb]in/ +[Oo]bj/ +[Ll]og/ +[Ll]ogs/ + +# Visual Studio 2015/2017 cache/options directory +.vs/ +# Uncomment if you have tasks that create the project's static files in wwwroot +#wwwroot/ + +# Visual Studio 2017 auto generated files +Generated\ Files/ + +# MSTest test Results +[Tt]est[Rr]esult*/ +[Bb]uild[Ll]og.* + +# NUnit +*.VisualState.xml +TestResult.xml +nunit-*.xml + +# Build Results of an ATL Project +[Dd]ebugPS/ +[Rr]eleasePS/ +dlldata.c + +# Benchmark Results +BenchmarkDotNet.Artifacts/ + +# .NET +project.lock.json +project.fragment.lock.json +artifacts/ + +# Tye +.tye/ + +# ASP.NET Scaffolding +ScaffoldingReadMe.txt + +# StyleCop +StyleCopReport.xml + +# Files built by Visual Studio +*_i.c +*_p.c +*_h.h +*.ilk +*.meta +*.obj +*.iobj +*.pch +*.pdb +*.ipdb +*.pgc +*.pgd +*.rsp +*.sbr +*.tlb +*.tli +*.tlh +*.tmp +*.tmp_proj +*_wpftmp.csproj +*.log +*.vspscc +*.vssscc +.builds +*.pidb +*.svclog +*.scc + +# Chutzpah Test files +_Chutzpah* + +# Visual C++ cache files +ipch/ +*.aps +*.ncb +*.opendb +*.opensdf +*.sdf +*.cachefile +*.VC.db +*.VC.VC.opendb + +# Visual Studio profiler +*.psess +*.vsp +*.vspx +*.sap + +# Visual Studio Trace Files +*.e2e + +# TFS 2012 Local Workspace +$tf/ + +# Guidance Automation Toolkit +*.gpState + +# ReSharper is a .NET coding add-in +_ReSharper*/ +*.[Rr]e[Ss]harper +*.DotSettings.user + +# TeamCity is a build add-in +_TeamCity* + +# DotCover is a Code Coverage Tool +*.dotCover + +# AxoCover is a Code Coverage Tool +.axoCover/* +!.axoCover/settings.json + +# Coverlet is a free, cross platform Code Coverage Tool +coverage*.json +coverage*.xml +coverage*.info + +# Visual Studio code coverage results +*.coverage +*.coveragexml + +# NCrunch +_NCrunch_* +.*crunch*.local.xml +nCrunchTemp_* + +# MightyMoose +*.mm.* +AutoTest.Net/ + +# Web workbench (sass) +.sass-cache/ + +# Installshield output folder +[Ee]xpress/ + +# DocProject is a documentation generator add-in +DocProject/buildhelp/ +DocProject/Help/*.HxT +DocProject/Help/*.HxC +DocProject/Help/*.hhc +DocProject/Help/*.hhk +DocProject/Help/*.hhp +DocProject/Help/Html2 +DocProject/Help/html + +# Click-Once directory +publish/ + +# Publish Web Output +*.[Pp]ublish.xml +*.azurePubxml +# Note: Comment the next line if you want to checkin your web deploy settings, +# but database connection strings (with potential passwords) will be unencrypted +*.pubxml +*.publishproj + +# Microsoft Azure Web App publish settings. Comment the next line if you want to +# checkin your Azure Web App publish settings, but sensitive information contained +# in these scripts will be unencrypted +PublishScripts/ + +# NuGet Packages +*.nupkg +# NuGet Symbol Packages +*.snupkg +# The packages folder can be ignored because of Package Restore +**/[Pp]ackages/* +# except build/, which is used as an MSBuild target. +!**/[Pp]ackages/build/ +# Uncomment if necessary however generally it will be regenerated when needed +#!**/[Pp]ackages/repositories.config +# NuGet v3's project.json files produces more ignorable files +*.nuget.props +*.nuget.targets + +# Microsoft Azure Build Output +csx/ +*.build.csdef + +# Microsoft Azure Emulator +ecf/ +rcf/ + +# Windows Store app package directories and files +AppPackages/ +BundleArtifacts/ +Package.StoreAssociation.xml +_pkginfo.txt +*.appx +*.appxbundle +*.appxupload + +# Visual Studio cache files +# files ending in .cache can be ignored +*.[Cc]ache +# but keep track of directories ending in .cache +!?*.[Cc]ache/ + +# Others +ClientBin/ +~$* +*~ +*.dbmdl +*.dbproj.schemaview +*.jfm +*.pfx +*.publishsettings +orleans.codegen.cs + +# Including strong name files can present a security risk +# (https://github.com/github/gitignore/pull/2483#issue-259490424) +#*.snk + +# Since there are multiple workflows, uncomment next line to ignore bower_components +# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622) +#bower_components/ + +# RIA/Silverlight projects +Generated_Code/ + +# Backup & report files from converting an old project file +# to a newer Visual Studio version. Backup files are not needed, +# because we have git ;-) +_UpgradeReport_Files/ +Backup*/ +UpgradeLog*.XML +UpgradeLog*.htm +ServiceFabricBackup/ +*.rptproj.bak + +# SQL Server files +*.mdf +*.ldf +*.ndf + +# Business Intelligence projects +*.rdl.data +*.bim.layout +*.bim_*.settings +*.rptproj.rsuser +*- [Bb]ackup.rdl +*- [Bb]ackup ([0-9]).rdl +*- [Bb]ackup ([0-9][0-9]).rdl + +# Microsoft Fakes +FakesAssemblies/ + +# GhostDoc plugin setting file +*.GhostDoc.xml + +# Node.js Tools for Visual Studio +.ntvs_analysis.dat +node_modules/ + +# Visual Studio 6 build log +*.plg + +# Visual Studio 6 workspace options file +*.opt + +# Visual Studio 6 auto-generated workspace file (contains which files were open etc.) +*.vbw + +# Visual Studio LightSwitch build output +**/*.HTMLClient/GeneratedArtifacts +**/*.DesktopClient/GeneratedArtifacts +**/*.DesktopClient/ModelManifest.xml +**/*.Server/GeneratedArtifacts +**/*.Server/ModelManifest.xml +_Pvt_Extensions + +# Paket dependency manager +.paket/paket.exe +paket-files/ + +# FAKE - F# Make +.fake/ + +# CodeRush personal settings +.cr/personal + +# Python Tools for Visual Studio (PTVS) +__pycache__/ +*.pyc + +# Cake - Uncomment if you are using it +# tools/** +# !tools/packages.config + +# Tabs Studio +*.tss + +# Telerik's JustMock configuration file +*.jmconfig + +# BizTalk build output +*.btp.cs +*.btm.cs +*.odx.cs +*.xsd.cs + +# OpenCover UI analysis results +OpenCover/ + +# Azure Stream Analytics local run output +ASALocalRun/ + +# MSBuild Binary and Structured Log +*.binlog + +# NVidia Nsight GPU debugger configuration file +*.nvuser + +# MFractors (Xamarin productivity tool) working folder +.mfractor/ + +# Local History for Visual Studio +.localhistory/ + +# BeatPulse healthcheck temp database +healthchecksdb + +# Backup folder for Package Reference Convert tool in Visual Studio 2017 +MigrationBackup/ + +# Ionide (cross platform F# VS Code tools) working folder +.ionide/ + +# Fody - auto-generated XML schema +FodyWeavers.xsd + +## +## Visual studio for Mac +## + + +# globs +Makefile.in +*.userprefs +*.usertasks +config.make +config.status +aclocal.m4 +install-sh +autom4te.cache/ +*.tar.gz +tarballs/ +test-results/ + +# Mac bundle stuff +*.dmg +*.app + +# content below from: https://github.com/github/gitignore/blob/master/Global/macOS.gitignore +# General +.DS_Store +.AppleDouble +.LSOverride + +# Icon must end with two \r +Icon + + +# Thumbnails +._* + +# Files that might appear in the root of a volume +.DocumentRevisions-V100 +.fseventsd +.Spotlight-V100 +.TemporaryItems +.Trashes +.VolumeIcon.icns +.com.apple.timemachine.donotpresent + +# Directories potentially created on remote AFP share +.AppleDB +.AppleDesktop +Network Trash Folder +Temporary Items +.apdisk + +# content below from: https://github.com/github/gitignore/blob/master/Global/Windows.gitignore +# Windows thumbnail cache files +Thumbs.db +ehthumbs.db +ehthumbs_vista.db + +# Dump file +*.stackdump + +# Folder config file +[Dd]esktop.ini + +# Recycle Bin used on file shares +$RECYCLE.BIN/ + +# Windows Installer files +*.cab +*.msi +*.msix +*.msm +*.msp + +# Windows shortcuts +*.lnk + +# JetBrains Rider +.idea/ +*.sln.iml + +## +## Visual Studio Code +## +.vscode/* +!.vscode/settings.json +!.vscode/tasks.json +!.vscode/launch.json +!.vscode/extensions.json diff --git a/c#/Chapter1/Chapter1.cs b/c#/Chapter1/Chapter1.cs new file mode 100644 index 0000000..a91889a --- /dev/null +++ b/c#/Chapter1/Chapter1.cs @@ -0,0 +1,132 @@ +// See https://aka.ms/new-console-template for more information + +using System.Diagnostics; +using StackExchange.Redis; + +namespace Chapter1; + +public class Chapter1 { + private const int OneWeekInSeconds = 7 * 86400; + private const int VoteScore = 432; + private const int ArticlesPerPage = 25; + + public static void Main() { + new Chapter1().run(); + } + + private void run() { + var con = ConnectionMultiplexer.Connect("localhost"); + var db = con.GetDatabase(); + + var articleId = postArticle(db, "username", "A title", "https://www.google.com"); + Console.WriteLine("We posted a new article with id: " + articleId); + Console.WriteLine("Its HASH looks like:"); + var articleData = db.HashGetAll("article:" + articleId); + + foreach (var entry in articleData) { + Console.WriteLine(" " + entry.Name + ": " + entry.Value); + } + + Console.WriteLine(); + + articleVote(db, "other_user", "article:" + articleId); + var votes = (int?)db.HashGet("article:" + articleId, "votes") ?? 0; + Console.WriteLine("We voted for the article, it now has votes: " + votes); + Debug.Assert(votes > 1, "Vote count is less than 1"); + + Console.WriteLine("The currently highest-scoring articles are:"); + var articles = getArticles(db, 1); + printArticles(articles); + Debug.Assert(articles.Count >= 1, "Article count is less than 1"); + + addGroups(db, articleId, new[]{"new-group"}); + Console.WriteLine("We added the article to a new group, other articles include:"); + var groupArticles = getGroupArticles(db, "new-group", 1); + printArticles(groupArticles); + Debug.Assert(groupArticles.Count >= 1, "Article group count is less than 1"); + } + + private string postArticle(IDatabase db, string user, string title, string link) { + var articleId = db.StringIncrement("article:").ToString(); + + var voted = "voted:" + articleId; + db.SetAdd(voted, user); + db.KeyExpire(voted, TimeSpan.FromSeconds(OneWeekInSeconds)); + + var now = DateTimeOffset.Now.ToUnixTimeSeconds(); + var article = "article:" + articleId; + var articleData = new List { + new("title", title), + new("link", link), + new("user", user), + new("now", now.ToString()), + new("votes", "1") + }; + db.HashSet(article, articleData.ToArray()); + + db.SortedSetAdd("score:", article, now + VoteScore); + db.SortedSetAdd("time:", article, now); + + return articleId; + } + + private void articleVote(IDatabase db, string user, string article) { + var cutoff = DateTimeOffset.Now.ToUnixTimeSeconds() - OneWeekInSeconds; + var articleScore = db.SortedSetScore("time:", article) ?? 0; + + if (articleScore < cutoff) { + return; + } + + var articleId = article.Substring(article.IndexOf(':') + 1); + + if (db.SetAdd("voted:" + articleId, user)) { + db.SortedSetIncrement("score:", article, VoteScore); + db.HashIncrement(article, "votes"); + } + } + + private List> + getArticles(IDatabase db, int page, string order = "score:") { + var start = (page - 1) * ArticlesPerPage; + var end = start + ArticlesPerPage - 1; + + var ids = db.SortedSetRangeByRank(order, start, end, order: Order.Descending); + var articles = new List>(); + + foreach (var id in ids) { + var articleData = db.HashGetAll(id.ToString()) + .ToDictionary(c => c.Name, c => c.Value); + articleData["id"] = id; + articles.Add(articleData); + } + + return articles; + } + + private void printArticles(List> articles) { + foreach (var article in articles) { + Console.WriteLine(" id: " + article["id"]); + foreach (var articleData in article.Where(c => !c.Key.Equals("id"))) { + Console.WriteLine(" " + articleData.Key + ": " + articleData.Value); + } + } + } + + private void addGroups(IDatabase db, string articleId, string[] toAdd) { + var article = "article:" + articleId; + foreach (var group in toAdd) { + db.SetAdd("group:" + group, article); + } + } + + private List> getGroupArticles(IDatabase db, string group, int page, string order = "score:") { + var key = order + group; + if (!db.KeyExists(key)) { + db.SortedSetCombineAndStore(SetOperation.Intersect, key, "group:" + group, order, aggregate: Aggregate.Max); + db.KeyExpire(key, TimeSpan.FromSeconds(60)); + } + + return getArticles(db, page, key); + } +} diff --git a/c#/Chapter1/Chapter1.csproj b/c#/Chapter1/Chapter1.csproj new file mode 100644 index 0000000..e9d9c00 --- /dev/null +++ b/c#/Chapter1/Chapter1.csproj @@ -0,0 +1,14 @@ + + + + Exe + net6.0 + enable + enable + + + + + + + diff --git a/c#/Chapter1/Chapter1.sln b/c#/Chapter1/Chapter1.sln new file mode 100644 index 0000000..76ddc4b --- /dev/null +++ b/c#/Chapter1/Chapter1.sln @@ -0,0 +1,16 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Chapter1", "Chapter1.csproj", "{F01C7220-1D82-4691-8EB2-DB79842BEC82}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Release|Any CPU = Release|Any CPU + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {F01C7220-1D82-4691-8EB2-DB79842BEC82}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {F01C7220-1D82-4691-8EB2-DB79842BEC82}.Debug|Any CPU.Build.0 = Debug|Any CPU + {F01C7220-1D82-4691-8EB2-DB79842BEC82}.Release|Any CPU.ActiveCfg = Release|Any CPU + {F01C7220-1D82-4691-8EB2-DB79842BEC82}.Release|Any CPU.Build.0 = Release|Any CPU + EndGlobalSection +EndGlobal diff --git a/c#/README.md b/c#/README.md new file mode 100644 index 0000000..c18ce4a --- /dev/null +++ b/c#/README.md @@ -0,0 +1,16 @@ +##Prerequisites + +* A running Redis instance as mentioned in the book +* NET 6.0 or higher installed + +##Running + +Open a command-line/terminal in the `c#` directory and do one of the following: + +* Windows: + `runchapter [#chapter-number]`. Use numbers 1 through 9 depending on the chapter's examples you want to run + i.e `runchapter 1` + +* Linux/Mac: + `./runchapter.sh [#chapter-number]`. Use numbers 1 through 9 depending on the chapter's examples you want to run + i.e `./runchapter.sh 1` \ No newline at end of file diff --git a/c#/runChapter.bat b/c#/runChapter.bat new file mode 100644 index 0000000..1bf5800 --- /dev/null +++ b/c#/runChapter.bat @@ -0,0 +1,26 @@ + @echo off +set chapter=Chapter%1 +set dir=%~dp0%chapter% +:: Keep old directory before changing +if exist %dir%\ ( +pushd . +cd %dir% + +:: build and run our project +echo: +echo ------------------------------------------------------------- +echo ^| Building %chapter% ^| +echo ------------------------------------------------------------- +echo: +dotnet build +echo: +echo ------------------------------------------------------------- +echo ^| Running %chapter% ^| +echo ------------------------------------------------------------- +echo: +dotnet run +:: Return to original directory +popd +) else ( + echo Could not locate directory "%dir%" +) \ No newline at end of file diff --git a/c#/runChapter.sh b/c#/runChapter.sh new file mode 100644 index 0000000..7fd7a83 --- /dev/null +++ b/c#/runChapter.sh @@ -0,0 +1,22 @@ +dir="Chapter"$1 + +if [ -d "$dir" ]; then + echo + echo ------------------------------------------------------------- + echo "| "Building $dir" |" + echo ------------------------------------------------------------- + echo + cd $dir + dotnet build + echo + echo ------------------------------------------------------------- + echo "| "Running $dir" |" + echo ------------------------------------------------------------- + echo + dotnet run + exit 0; +fi +else + echo Could not locate directory "$dir" + exit 1; +fi \ No newline at end of file