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%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
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% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
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% Document Info
\author{saran sudha}
\pdfinfo{
  /Title (scalability-part2.pdf)
  /Creator (Cheatography)
  /Author (saran sudha)
  /Subject (Scalability part2 Cheat Sheet)
}

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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
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    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Scalability part2 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{saran sudha} via \textcolor{DarkBackground}{\uline{cheatography.com/202593/cs/43102/}}}
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\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}saran sudha \\
  \uline{cheatography.com/saran-sudha} \\
  \end{tabulary}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 18th April, 2024.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
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  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
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\end{multicols}}




\begin{document}
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% www.emerson.emory.edu/services/latex/latex_169.html
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\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Reverse proxy}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Distribute incoming traffic across multiple backend servers} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Ensures that no single server becomes overwhelmed with requests} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{andles routing traffic to the available servers, making it simple to scale horizontally} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Can easily scale application by adding or removing backend servers as needed} \tn 
% Row Count 8 (+ 2)
% Row 4
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\mymulticolumn{1}{x{5.377cm}}{Compress responses before sending them to clients, reducing the amount of data transmitted} \tn 
% Row Count 10 (+ 2)
% Row 5
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\mymulticolumn{1}{x{5.377cm}}{Offloading SSL termination to the reverse proxy alleviates the resource-intensive task of encryption/decryption from backend servers} \tn 
% Row Count 13 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Load Balaner}}  \tn
% Row 0
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\mymulticolumn{1}{x{5.377cm}}{Distributes incoming traffic} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Ensures optimal resource utilization, fault tolerance, and scalability as the application grows} \tn 
% Row Count 3 (+ 2)
% Row 2
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\mymulticolumn{1}{x{5.377cm}}{{\bf{Types}}:} \tn 
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% Row 3
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\mymulticolumn{1}{x{5.377cm}}{{\bf{Hardware Load Balance}}} \tn 
% Row Count 5 (+ 1)
% Row 4
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\mymulticolumn{1}{x{5.377cm}}{Supports L4* and L7*} \tn 
% Row Count 6 (+ 1)
% Row 5
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\mymulticolumn{1}{x{5.377cm}}{Higher cost} \tn 
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\mymulticolumn{1}{x{5.377cm}}{Limited flexibility and agility compared} \tn 
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\mymulticolumn{1}{x{5.377cm}}{{\bf{Software Load Balancer}}} \tn 
% Row Count 9 (+ 1)
% Row 8
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\mymulticolumn{1}{x{5.377cm}}{Supports only L7*} \tn 
% Row Count 10 (+ 1)
% Row 9
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\mymulticolumn{1}{x{5.377cm}}{Lower cost compared to HLB} \tn 
% Row Count 11 (+ 1)
% Row 10
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\mymulticolumn{1}{x{5.377cm}}{Greater flexibility and agility in deployment and management.} \tn 
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\mymulticolumn{1}{x{5.377cm}}{\textasciicircum{}{\emph{L4 - Transport Layer of the OSI includes UDP,TCP, SCTP}}\textasciicircum{} \newline \textasciicircum{}{\emph{L7 - Application Layer of the OSI which is highest layer includes HTTP, HTTPS, SFTP etc}}\textasciicircum{}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{DNS as load balancer}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Involves leveraging DNS to distribute incoming client requests across multiple backend servers or resources.} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Returns single IP in round robin fashion} \tn 
% Row Count 4 (+ 1)
% Row 2
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\mymulticolumn{1}{x{5.377cm}}{can be configured along with health checks} \tn 
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% Row 3
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\mymulticolumn{1}{x{5.377cm}}{DNS records can be updated dynamically based on server availability and load conditions.} \tn 
% Row Count 7 (+ 2)
% Row 4
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\mymulticolumn{1}{x{5.377cm}}{it's essential to consider the limitations and potential latency issues associated with DNS caching and propagation} \tn 
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% Row 5
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\mymulticolumn{1}{x{5.377cm}}{{\bf{Drawback}}} \tn 
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% Row 6
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\mymulticolumn{1}{x{5.377cm}}{Indefinite caching} \tn 
% Row Count 12 (+ 1)
% Row 7
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\mymulticolumn{1}{x{5.377cm}}{Low or zero TTLs} \tn 
% Row Count 13 (+ 1)
% Row 8
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\mymulticolumn{1}{x{5.377cm}}{Very high load on DNS} \tn 
% Row Count 14 (+ 1)
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{SAGA Pattern}}  \tn
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\mymulticolumn{1}{x{5.377cm}}{SAGA breaks down complex transactions into smaller, loosely coupled units of work called "sagas."} \tn 
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% Row 1
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\mymulticolumn{1}{x{5.377cm}}{In a microservices architecture each microservice can represent a step in the saga, allowing them to be scaled independently based on demand} \tn 
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% Row 2
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\mymulticolumn{1}{x{5.377cm}}{Asynchronous nature can be leveraged to improve scalability by decoupling services and allowing them to scale independently} \tn 
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% Row 3
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\mymulticolumn{1}{x{5.377cm}}{the SAGA pattern's transaction decomposition, asynchronous communication, and distributed coordination can aid in constructing scalable distributed systems.} \tn 
% Row Count 12 (+ 4)
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\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}