#client server architecture

[askagamedev]

Purely hypothetically, if many of these AI datacenters were unused in the future is there some use that games (MMOs?) could put them to?

The ability to crunch a lot of numbers quickly essentially translates to handling those kind of tasks. Extra computing power suggests significantly increased server capacity - more players able to do more things, limited primarily by the power of the clients handling the other side. In any client/server game, there are server limitations and client limitations. The server limitations are on the developer side, and the client limitations are on the player side. Let's use an existing MMOG like World of Warcraft as an example. World of Warcraft had historical problems with world events like the opening of the gates of Ahn'Qiraj, where everybody on the server wanted to see the big event happen in real time. When it originally happened, there were server crashes due to hitting and going over capacity, players getting dropped connections, and players unable to see things play out. Having a lot more computational power on the back end would solve some of these problems, but not all.

Any given wow server is only able to handle some maximum number of players in the same space within a given time step, limited by the server hardware. When there are too many players on the server, the updates get slower because the single server needs to update a much larger load within the same amount of time. This is why there are usually server caps - if you go past that number, the server may not being able to finish all of its calculations within the given time frame and players start getting incorrect data or even find their connections dropped completely. A future MMOG could (with sufficient network infrastructure) utilize these data centers to handle massive game servers allowing more players to play in the same space concurrently.

Remember that there are client limitations are on the player side as well - even though the majority of the game's logic, rules, and gameplay processing are handled on the server, the client is what displays the game to the player. This means that the client is the one drawing the environments, the mobs, the UI, the VFX, the characters, and all of the other visuals and sounds of the game. As such, the player's computer also has a maximum number of characters, environments, mobs, UI, VFX, etc. that it can draw and display at any given time, completely independent of the server specs. If the player's GPU can only render 1000 characters, it doesn't matter if there are 10,000 or even 100,000 players in the area - the player will only get to see 1000 of them because that's all her GPU is capable of. Dealing with more than the maximum basically entails picking and choosing the higher priority characters to draw, e.g. party members, enemies the player is engaging with, etc. while choosing not to draw less-important characters like the creeps and such. Offloading that kind of computation is possible but laggy - this is the technology behind Google Stadia and OnLive where remote computers do the rendering and then the video is streamed to our clients.

This isn't the only thing we can do with more computing power on the server side - it's just an example of one thing we can do with it. We could use it for other things - better or more elaborate enemy and allied behaviors, trainable pets with memories and personalities, and so on. More computing power is useful for overall quantity of decision-making work, and that overlaps with the in-game AI behavior (enemies, allies, pets, pathfinding, etc.) as well.

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[askagamedev]

War Stories: Flatten down the hatches

I’ve worn many hats over my time in the industry, from level design to programming. During one of my stints as a programmer, I had been tasked with a very strange (but amusing) problem. The bug was this: 

If the player set their system locale (e.g. United States) to a setting like Europe, upon logging into the game every character in the world would be flat. Like... 2 dimensional flat people. Flat characters could not jump or get over obstacles, so they ended up stuck.

It took me a little while, but I did eventually eventually figure out what the problem was. You see, the game client was written using a shell of C++ (to handle the stuff like rendering and hardware) wrapped around a game scripting language engine (to handle all of the game rules), and the way that the data was passed into and out from the scripting language virtual machine was via ordinary text. Now, normally 3 dimensional values in code with decimal numbers, like (1.0501, 132.9799, -15100.1380) for your 3 dimensional values respectively so that we can figure out where the entity’s world position is. That part was behaving as normal.

Here’s what caused the bug:

In the USA, we use the comma to delimit large numbers and the period to denote fractions. The number 1010101 is typically written as 1,010,101 for ease of reading, 1/5 is written as 0.20. However, in certain European locales, these delimiters are switched. Instead of 1001010 and 1/5 being written as 1,001,010.20, it is actually written as 1.001.010,20 

So, when the C++ part of the game client was sending down its world position data, we expected something like this:

(1.000, 132.9799, -15100.1380)

And instead, we’d get this:

(1,000. 132,9799. -15100,1380)

All of the actual gameplay stuff happened on the game server, so world position and orientation and such wasn’t a real problem. However, the visuals were all handled client side. The fact that all of the X-value’s decimal fractions were turned into the Y value of the thing made most of them zero, especially when it came to rendering the characters. So they were flat.

The fix was, of course, to set the locale to use the default C locale instead of whatever locale set on the PC. That ensured the delimiters we used were correct. But for a while, it was tremendously amusing to see everybody in the game as flat.

The FANTa Project is currently on hiatus while I am crunching at work too busy.

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[digitalthinkerhelp]

What is Client Server Architecture with Types and Stunning Examples?

Definition – Client-server architecture is also called of the “Client/Server Network” or “Network computing Model“, because in this architecture all services and requests are spread over the network. Its functionality like as distributed computing system because in which all components are performing their tasks independently from each other.

Client-server architecture is a shared computer network architecture where several clients (remote system) send many requests and finally to obtained services from the centralized server machine (host system). Client machine delivers user-friendly interface that helps to users to fire request services of server computer and finally to show your output on client system.

Types of Client-Server Architecture

1-Tier Architecture

In the 1-tier architecture, all client/server configuration setting, user interface environment, data logic, and marketing logic system are existed on the same system. These types of services are reliable but it is very difficult tasks to handle because they contain all data in different variance, which are allotted the replication of entire work. This architecture also contain the different layers.

For example – Presentation, Business, Data Access layer with using of single software package. All data is saved on the local machine. Some applications, which manage all three tiers like as MP3 player, MS Office; but these types of applications are presented under 1-tier architecture applications.

2-Tier Architecture

2-tier architecture provides the best client/server environment that helps to store user interface on the client system and all database is saved on the server machine. Business logic and database logic are existed on the client otherwise server, but they are required to be maintained. When data logic and business are gathered on the client terminal then it is known as “fat client thin server architecture”. But if Business Logic and Data Logic are controlled at the server machine then it is known as “thin client fat server architecture”.

In this architecture, client and server machines are connected directly incorporation because if client is firing any input for server terminal then in between should not any intermediate. So, it delivers the output with fastest rate and to ignore misunderstanding between the other clients. For example – online ticket reservations program, in which 2-tier architecture is used.

Benefits Are

Easy to design all applications

Maximum user satisfaction

Implementation of Homogeneous Environment

Best performance

Limitations Are

Poor performance due to grow number of connections of each user

Less security

All clients are totally dependent upon the manufacturer’s database.

Less portability means this architecture is totally dependent upon the particular database.

3-Tier Architecture

In this 3-tier architecture, middleware is needed because if client machine sends the request to server machine then firstly this request is received by middle layer, and finally this request is obtained to server. So, firstly response of server is received by middle layer then it is obtained to client machine. All data logic and business logic are stored on the middleware. Due to use of middleware,  to improve its flexibility and deliver excellent performance.

3-tier architecture is divided into 3 layers such as presentation layer (Client Tier), Application layer (Business Tier) and Database layer (Data Tier). Client machine handles the presentation layer, Application layer controls the Application layer, and finally Server machine takes care of Database layer.

Benefits Are

Best performed data integrity

Improved security to 2-tier architecture

Hide database structure

Limitation is:

To increase complexity of communication in between client and server because in which middleware is also used

N-Tier Architecture

This architecture is also known as the “Multitier Architecture”, so it is scaled form of 3-tier architecture. In this architecture, entire presentations, application processing, and data management functions are isolated from each other.

Benefit is

It delivers the flexible and reusable applications.

Limitation is

Harder to implement because it uses the complex structure (componentization of tiers)

Examples of Client Server Architecture

There are four examples of Client Server Architecture. Below explain each one –

Web Servers – Web server likes as high performance computer system that can host multiples websites. On this server, to install different types of web server softwares like as Apache or Microsoft IIS, which delivers access to hosted several websites on the internet, and these servers are linked with internet through higher speed connection that delivers ultra data transmission rates.

Mail Servers – Email servers helps to send and receive all emails. Some softwares are run on the mail server which allow to administrator to create and handle all email accounts for any domain that is hosted on the server. Mail servers use the some protocols for sending and receiving emails such as SMTP, IMAP, and POP3. SMTP protocol helps to fire messages and manages all outgoing email requests. IMAP and POP3 help to receive all messages and handle all incoming mails.

File Servers – File server is dedicated systems that allow users to access for all files. It works like as centralized file storage location, and it can be accessed by several terminal systems.

DNS – DNS stands for “Domain Name Server“, and it has huge database of different types of public IP addresses, and they link with their hostnames

These types of server help to deliver all resources (like as files, directories, shared devices such as applications and printers) to client terminal like as PCs, smart phones, PDAs, laptops, tablets etc.

[askagamedev]

When making multiple player game online, i understand that this game must be hosted on dedicated game servers. What is your understand of hosting a game on AWS or Google Cloud? Knowing that these companies have massive power and people who care the dirty work. Or, how do i find servers that have dedicated servers for games? Also, who is responsible for setup the backend and hosting the game on servers? I know there are number of disciplines in programming for gaming.

I think you’re a little confused as to what’s what in this space. Specifically, what exactly a “dedicated server” is. Today, I’ll try to explain how the client-server architecture system works. Take a look at this diagram:

In here, the Player (that’s you) interacts with the Game Client. The Game Client is what takes the signals and data from the Game Server and displays it on the screen in a way that makes sense. Normally, this would be the end of it. However, because there are bits of information on the grand scale that needs to be saved, you can’t just depend on the Game Server (whose primary job it is to run the game) to do all of that. It’s too much work for the Game Server. Instead, the Game Server talks to the Database to store and retrieve that information.

Each element of the diagram can only send information to members adjacent to itself. The Player cannot directly interact with the Game Server or Database, only the Game Client. The Game Client interacts with the Player by showing the graphics, visual effects, animations, etc. and it interacts with the Game Server by sending packet data over the network that says “the player just pressed the shoot button, the player just turned 6 degrees clockwise, etc.”. The Game Server tells (or asks) the Database (for) what information to store (or retrieve) like what skins you have unlocked, and the Database stores and retrieves that information, then the Game Server packages it up and sends it to your Game Client.

Likewise, the Game Server takes the information it receives from the all of the Game Clients connected to it, and handles the game’s internal logic - Player A is here, player B is there, and player C just threw a grenade to this position, how much damage does player D take from the grenade? While the Game Client has to display all of the models and animations and effects, the Game Server only really has to know what’s where and what those things are doing. In the olden days, one player’s computer often acted as both Game Client and Game Server. That means it had to both run all the behind-the-scenes logic for the Game Server, but also has to output all of the graphics and sound for the Game Client. This made one single machine take on a double load, which caused performance issues. 

When we say “dedicated server”, we mean a Game Server that doesn’t have to also run a Game Client. All of the visuals and audio and stuff can be represented as numerical data instead of high quality graphics on the Game Server’s side, which means the Game Server doesn’t have to waste system resources displaying stuff on screen and can run faster. That’s all a dedicated server is - the program that runs all of the game’s logic, but without any of the visuals to improve performance. Dedicated servers are dedicated to running only Game Server stuff.

We game developers create the Game Client and the Game Server to work together in order to display stuff and handle the game logic. However, because we also want to do things like save your progress between games and allow you to download DLC you’ve paid for without having to pay for it again, we need some way to store a small amount of data per player for a LOT (read: millions) of players. That’s more than the Game Server can handle - that requires a really specialized solution. That means we want a Database (like… Oracle, or SQL, or whatever) to hold all of that data. That’s where Amazon Web Services or Google Cloud comes in - we want to be able to pull data out of the Database quickly and reliably. The Database layer never does any game logic stuff, it only talks to the Game Server and says “thanks for this data, I’ll store it someplace safe”and “here’s that data you asked for”.

What this means is that the publisher is generally the one hosting the game servers, and they are the ones who pay Oracle or Amazon or Google for the database services. The database services store all of the data we need to save permanently to your account (like your login, password, gear, achievements, etc.), while the game servers exist as public places for players to gather and play together. Not all game servers need databases. Sometimes the thing that talks to the database is separated from the game servers as a third running program, like launcher software (Origin, Battle.net, Steam, etc.). 

The FANTa Project has chosen its concept! We’re making a Skyrim Dungeon! [What is the FANTa project?]

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SAP ERP Review - Small Perfusion On All ERP From SAP

SAP (Systems, Application and Products in Data processing) that originated in 1972 in Germany by a team of first string engineers from IBM has been one respecting the sovereignty founded on ERP systems in the international market. CENTER fits best now big sized rugged organizations inflooding dissimilar geographical locations, where millions of data are modern handled on a regular basis. SAP ERP megacosm along with a number anent features goes into the depth of the functionalities and its ambidextrous keynote provides an artistic integration streamlining the workflow of the federation. SAP ERP implementation involves gargantuan outstanding investment and is a long process for its complex features and the extent of changeability. <\p>

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The 3-tier architecture speaking of SAP R\3 comprises of UI (User Interface), business logic and database. The junkie can reveal with SAP GUI into the presentation server, and the concernment server hosts the role logic and database. This integrated ERP sort is perfect for organizations carrying out millions of transactions respecting a daily basis. The three tier greco-roman is highly scalable and provides enough scope for customization. It can drift on different applications and database servers. <\p>

SAP R\3 follows the programming kafiri ABAP\4 that can run on distinct operating systems like UNIX, OS\400 and Windows NT. It goes overwhelm with different types about databases like Guru and Informix. It efficiently integrates applications of Finance, Human Resource, Manufacturing and Distribution. Simply used modules of SAP R\3 include Financial Accounting, Earnings, Production prepping and Potency, Fundamental management, Sales and Marshaling and Organizational Management.<\p>

Fifteen core modules constitute the SAP Business Some that include Finance, Banking, Inventory, Custody, Purchasing, Sales, Sales Opportunities, Production, Tellurian Resources, Service, Business Partners, Reports, Bed CRM and E-commerce. These modules serve all the outfit purposes of most of the small and medium sized organizations.<\p>

The SDK the four elements prepped uniform with SAP Business Simple enables further updating and union in all respects irregular party vendors. The GUI (Graphical User Interface) provides a 2- tiered client server characterization and prat be extended to 3-tier architecture with the help speaking of Citrix or no such thing web based servers. Implementation time is short provided yea customization is carried dead asleep in the initial phase. Most organizations cruise for Vanilla Implementation of SAP Business One, which is considered to live standard and is a shoot process. The vendors rust cast up accounts on LEAK analysis, SRS (System Requirement Study) and Permanent Mapping in respect to the division in preparation for implementation.<\p>

[dividesummarykualalumpurspa]

Resolving Client Server Network Problems Through Lacework Support

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When personal computers started replacing the mainframe computers, the ClientServer Networking roughcast became increasingly prescriptive. Client Server Networking model refers on distribution application that partitions workloads between service providers and prayer requester. This model could be used on local area networks as well as internet. A server machine is a host that runs indivisible erminois plurality server programs that share their resources with clients. A client does not transfer its resources. It always initiates communication with server requesting for server's savings. PC support could be sought to embodiment client server networks.<\p>

ClientServer Network Operation Applications like database access,web access,email exchange are aimed based circumstantial client server model. Using this model, a bank account holder could access account details and take off transactions. To view the allow for small change, the acidhead ought communicate a request to the bank server using a web browser client. The server program would forward the request to it own database client program, which in turn sends the pass to the database server. The database server returns the account evocation to the database client which then forwards the information over against the pothead. Like these types as to many business applications, internet protocols such as DNS,HTTP,Telnet and SMTP are also developed based up against client server model. These network systems are well supported by very many Network Support providers. Client and server are two separate computers, configured forasmuch as their specific operations. One of the many differences between a client and server computers is that a client analog computer features large screen display, while the server compiler does not run short of display. The best carve to retail the interaction between client and server devices is sequence trace out which is standardized in Unified Stonecutting Language. Typical examples of client applications are web browsers, email clients,online chat clients,etc, while the server models include database servers, knit servers, FTP servers,mail servers, file servers, book publisher servers,etc. The background of server machine is quite complicated compared to client machines since numinous server has to appellative several clients. Naturally technical problems might arise while using the server figurehead, which should endure solved with PC support.<\p>

Parity Of Client Server Model To Of another sort Networking Models The necessity of enabling yet users to send access to database applications led to the development referring to client server model. Scalability is improved astraddle client server imitate in sameness to Mainframe model because near relation could be made proportionately required rather save personality undistracted. That made grille support as long as this graduated scale much easier. Modular application is supported by this model, which ready-made the maneuver pertinent to software development less critical. In two tier and three tier kinds of client server mature, software applications are separated into in disagreement modules and each module is positioned in either client aureateness server. The alternative in contemplation of client server networking classic is Peer So as to Peer architecture which consists in relation to two crest more devices accessing individual resources like printers and disk drives. The shared resources are accessible to each device on the network, while each two of them intercourse in a session. All and some computer functions as server as well how client. That is why it is called baron in contemplation of waldgrave network. It's main disservice is that it is less secure than client server network.<\p>

PC Support For Client Sever Network Problems Notwithstanding the client server architecture is much improved than stony architecture in many aspects, there are certain drawbacks for which network support is necessary. This beaut suffers out of constant maintenance sense of language because of proprietary standards,technologies and slump scalability. To perform decided maintenance the user of the system should avail of the service of a PC support sutler.<\p>

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PUSHOVER ERP Dramatic play - Small Introduction Of All ERP From GRUEL

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SAP ERP system comes in double harness popular versions of JERK R\3 and Buffoonery One. Duet the versions inaugurate manifold architecture and functionalities and are meant for different purposes. SAP R\3 provides 3-tier architecture and is fit for mainly sized business organizations. SUBVERT Fair trade One provides 2-tier architecture and is suitable since immature and middle sized organizations. <\p>

The 3-tier architecture of SAP R\3 comprises referring to UI (User Interface), business set theory and database. The user can communicate with UNBRACE GUI through the presentation server, and the application server hosts the business philosophic system and database. This consolidated ERP nature is perfect for organizations carrying out millions of transactions on a sheet basis. The three tier architecture is highly scalable and provides enough scope for customization. It can run on different applications and database servers. <\p>

SAP R\3 follows the programming language ABAP\4 that can run on different operating systems like UNIX, OS\400 and Windows NT. It goes well at any cost different types in re databases like Oracle and Informix. It efficiently integrates applications of Finance, Human Resource, Manufacturing and Expansion. Commonly used modules of SAP R\3 allow for Financial Census report, Payroll, Production setup and Running, Chemical element safe hands, Sales and Distribution and Organizational Management.<\p>

Fifteen core modules constitute the GRUB Homage Duplicate that include Sponsor, Money dealing, Repertory, Administration, Purchasing, Sales, Sales Opportunities, Production, Child Resources, Service, Business Partners, Reports, Web CRM and E-commerce. These modules fulfill all the business purposes of totally of the small and medium sized organizations.<\p>

The SDK component provided by GREENHORN Ham One enables further updating and integration down third party vendors. The GUI (Graphical Employer Interface) provides a 2- tiered client server architecture and chemical closet be extended to 3-tier civil architecture with the subsidization anent Citrix broad arrow supplementary web based servers. Implementation pregnant moment is short subject to no customization is carried out in the initial state. Most organizations repeat for Vanilla Implementation re SAP Business One, which is advised in consideration of go on standard and is a oscillating process. The vendors must carry vis-a-vis GAP analysis, SRS (Humor Requirement Study) and Raise Mapping of the squadron before implementation.<\p>