Wednesday, April 17, 2024

Restaurant Reservation System Design Interview

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We Need To Talk About Cosby

Google Software Engineer Design Interview: Reservation System

As much as the media has covered Bill Cosbys assaults on women, as a culture we havent fully reconciled our reverence for his body of work with our disdain for his decades-long history of drugging and preying on women. W. Kamau Bell, who directs this four-part Showtime docuseries, forces that conversation by assembling academics, journalists, people who worked alongside Cosby, and survivors of his assaults to discuss his legacy and how it has been diminished, if not fully destroyed, by the crimes he committed. These are difficult conversations, and Bell guides them with intelligence and empathy. He also lays out Cosbys assaults and cultural achievements on a timeline that fully drives home that, as one interview subject puts it, as much as we thought we knew Cosby, we didnt really know him at all. Jen Chaney

Section : Networks And Protocols

“Protocols” is a fancy word that has a meaning in English totally independent of computer science. It means a system of rules and regulations that govern something. A kind of “official procedure” or “official way something must be done”.

For people to connect to machines and code that communicate with each other, they need a network over which such communication can take place. But the communication also needs some rules, structure, and agreed-upon procedures.

Thus, network protocols are protocols that govern how machines and software communicate over a given network. An example of a network is our beloved world wide web.

You may have heard of the most common network protocols of the internet era – things like HTTP, TCP/IP etc. Let’s break them down into basics.

Design A Restaurant Reservation System

  • In a restaurant, there are multiple tables with varying seating capacities.
  • A table of a seating capacity of n can be booked for m people of a group such that m < = n
  • A table can be re-booked for the same day only if the there is a minimum T duration difference between 2 bookings.
  • Booking can be done in fixed hours when the restaurant operates.
  • Time of booking required
  • Contact details
  • int CheckTableAvailability – This function will tell whether the booking is possible or not. If possible on the input time it will return 1 and file the tableNumber. If not on the input time, but at some time near to that, it will return 2 with the alternativeTime and TableNumber that can be booked. If not at all possible then it will return 0.
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    What We Do In The Shadows

    The challenge of a great sitcom as it moves past its first few seasons is in finding some way to retain all the things people like, but shake up the status quo enough to avoid eternal repetition. In its fourth season, What We Do in the Shadows attacks the challenge from multiple angles. The vampires are opening a new nightclub their home has fallen into ruin and the beloved, nightmarish energy vampire Colin Robinson has been reborn as a tap-dancing theater kid . Most fascinating, though, is the way the show continues to poke at the relationship between goofy-dumb vampire Nandor and his paradoxically vampire-slaying familiar Guillermo. That experimentation is what makes season four not just a rest-on-its-laurels, continued good time, but one of the best comedies on TV. K.V.A.

    Read Katie Rifes recaps of season four.

    Make Your Richmond Hill Hotel Search Easy

    Obee Table Reservations App

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    A Saltwater Indoor Pool Plus Free Wi-Fi And A Free Hot Breakfast Rule At The Non-Smoking Hampton Inn & Suites By Hilton Toronto Markham. In Addition To Microwaves, Mini-Fridges And Electric Kettles, The Seven-Story Hotel’S 99 Rooms Also Include Handy Features Like Free Wi-Fi And 42-Inch Flat-Panel Tvs. There’S A Complimentary Breakfast Buffet To Start Each Morning. Heat Up With A Cardio Routine In The Fitness Room, Or Chill Out In The Heated Indoor Saltwater Pool. The On-Site Sundry Shop Is Open 24 Hours A Day, And On-Site Parking Is Free. The Hotel Is Off Highway 407 In Markham, Less Than 20 Miles North Of The Air Canada Centre In Downtown Toronto. Shop, Dine And Play At Main Street Unionville, Three Miles Away, Or Drive 20 Minutes To Canada’S Wonderland Theme Park. Toronto Pearson International Airport Is 23 Miles Southwest Of The Hotel. Priceline Guests Like The “Modern” Decor And The Friendly Staff At This Markham Property, As Well As The “Delightfully Healthy” Options At The Free Breakfast Buffet.

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    Guillermo Del Toros Cabinet Of Curiosities

    The Guillermo del Toro brand of horror is not really scary. As a filmmaker, hes more interested in unsettling, spooking, and mesmerizing you, whether thats by unveiling memories of people lost and childhoods cut short , emphasizing the cruelty of conformity , or simply highlighting his obsession with the transformative power of odd, ancient things . All of those interests and peculiarities are on display in his lavish, consistent, immersive Netflix anthology series, Guillermo del Toros Cabinet of Curiosities. Del Toro provided the story basis for two episodes and invited in various other genre mainstays for directing and writing duty, like David Prior of The Empty Man, Panos Cosmatos and Aaron Stewart-Ahn of Mandy, and Jennifer Kent of The Babadook. The result is essentially a collection of short films that run the gamut from gory and grotesque to demonic and supernatural , and their production design, cinematography, and visual effects are all top-notch and distinct. No, the installments arent nightmarishly frightening. But at their best, they make us question the nature of our own reality and how we absorb the everyday mysteries and traumas and triumphs of the human experience. Thats the del Toro way, and the team hes assembled for Guillermo del Toros Cabinet of Curiosities beautifully aligns with that approach. R.H.

    Corinthia Grand Hotel Du Boulevard Bucharest

    Corinthia Doha will be a prominent structure in Gewan Island, overlooking the Islands planned golf course and beach club, covering an area of 13,000sqm and will comprise 110 guestrooms, a banquet hall and outdoor patio with a 1000 people capacity, an all-day dining and speciality restaurants in addition to a luxurious spa facility.

    The Corinthia Oasis will mark the groups return to Malta, where the brand first commenced operations in 1962. This Mediterranean-style, 162-key resort hotel will offer a suite-led mix over two distinct garden zones, one housing the low-rise hotel itself and the other featuring the exclusive Water and Garden Suites. It will also be home to the islands most extensive wellness facility along with a host of outdoor sports and leisure experiences that will be tailored to guests requirements.

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    Restaurant Reservation Software: What Restaurants Need

    Of course, pleasing the customer is a top priority for a restaurant owner. But being able to do so while not pulling ones hair outand having staff feeling comfortable and well-informed toois one of the prime reasons these systems exist. A restaurant will want a system that streamlines all of their front of house systems into an efficient, nearly automated system.

    Integration with POS system

    You definitely want software that offers POS integration with reservation or waitlist systems. Rather than having two different pieces of software that may conflict with each other, many systems come with both customer- and restaurant-facing software as one unit.

    That means that the restaurant reservation system can handle online ordering, real-timetext messages, table management, and point of sale operations all at the same time. This same system that takes reservations can remind you when its a regulars birthday, or what their favorite cocktail is, or what special request they may have made last time. Remembering details like that is what makes customers come back, and your servers will truly appreciate it when theyre armed with the info they need to do an excellent job managing tables.

    A management system should also be customizable enough to allow for individualized floor plans, personalized or customizable customer messages, and allow for customer reviews post-meal.

    Robust analytics

    Pricing options

    Section : Leader Election

    Airbnb System Design | Booking.com System Design | System Design Interview Question

    Let’s move back to servers again for a slightly more advanced topic. We already understand the principle of Availability, and how redundancy is one way to increase availability. We have also walked through some practical considerations when handling the routing of requests to clusters of redundant servers.

    But sometimes, with this kind of setup where multiple servers are doing much the same thing, there can arise situations where you need only one server to take the lead.

    For example, you want to ensure that only one server is given the responsibility for updating some third party API because multiple updates from different servers could cause issues or run up costs on the third-party’s side.

    In this case you need to choose that primary server to delegate this update responsibility to. That process is called leader election.

    When multiple servers are in a cluster to provide redundancy, they could, amongst themselves, be configured to have one and only one leader. They would also detect when that leader server has failed, and appoint another one to take its place.

    The principle is very simple, but the devil is in the details. The really tricky part is ensuring that the servers are “in sync” in terms of their data, state and operations.

    In other words, a consensus algorithm is used to give all the servers an “agreed on” value that they can all rely on in their logic when identifying which server is the leader.

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    This Is Going To Hurt

    There are roughly a million medical shows, but few are as unsparing, authentic, and urgent as this one. Created by British writer Adam Kay , the series follows a fictional doctor of obstetrics and gynecology named Adam, whose emotional well-being teeters literally and figuratively on the edge of a scalpels blade. Played by the brilliant Ben Whishaw with the intensity of a tightened guitar string about to snap, Adam has plenty of personal issues to tend to a longtime partner who feels neglected and a mother who has no idea her son is gay but hes constantly being yanked away from such matters by whatever emergency has arisen at the hospital. And theres always a legitimate emergency at the hospital. While This Is Going to Hurt certainly contains its share of eye-widening deliveries and patient-doctor drama, what distinguishes it from other shows of its ilk is its honest illumination of the British health-care systems limitations and how it can squeeze the life out of the doctors, nurses, and residents in it. In a less humorous context, This Is Going to Hurt does a version of what Abbott Elementary does: It illustrates how brutally governmental systems can treat those who take care of the rest of us at our most vulnerable.

    Common Scenarios For Caching

    Similarly, in software terms, if we end up relying on certain pieces of data often, we may want to cache that data so that our app performs faster.

    This is often true when it’s faster to retrieve data from Memory rather than disk because of the latency in making network requests. In fact many websites are cached in CDNs so that it can be served to the end user much faster, and it reduces load on the backend servers.

    Another context in which caching helps could be where your backend has to do some computationally intensive and time consuming work. Caching previous results that converts your lookup time from a linear O time to constant O time could be very advantageous.

    Likewise, if your server has to make multiple network requests and API calls in order to compose the data that gets sent back to the requester, then caching data could reduce the number of network calls, and thus the latency.

    If your system has a client , and a server and databases then caching can be inserted on the client , between the client and the server , or on the server itself. This would reduce over-the-network calls to the database.

    So caching can occur at multiple points or levels in the system, including at the hardware level.

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    Section 1: Messaging & Pub

    When you design and build large-scale and distributed systems, for that system to work cohesively and smoothly, it is important to exchange information between the components and services that make up the system. But as we have seen before, systems that rely on networks suffer from the same weakness as networks – they are fragile. Networks fail and its not an infrequent occurrence. When networks fail, components in the system are not able to communicate and may degrade the system or cause the system to fail altogether . So distributed systems need robust mechanisms to ensure that the communication continues or recovers where it left off, even if there is an “arbitrary partition” between components in the system.

    Publisher / Subscriber Messaging

    This is a very popular paradigm for messaging. The key concept is that publishers ‘publish’ a message and a subscriber subscribes to messages. To give greater granularity, messages can belong to a certain “topic” which is like a category. These topics are like dedicated “channels” or pipes, where each pipe exclusives handles messages belonging to a specific topic. Subscribers choose which topic they want to subscribe to and get notified of messages in that topic. The advantage of this system is that the publisher and the subscriber can be completely de-coupled – i.e. they don’t need to know about each other. The publisher announces, and the subscriber listens for announcements for topics that it is on the lookout for.

    About Hilton Hotels Richmond Hill

    Srs document template for airline reservation system

    One of the most prominent names in the hotel industry, Hilton Hotels is considered a behemoth. It all started when Conrad Hilton bought its first hotel in 1919 and among the first to introduce a lot of new amenities and services for a better hotel experience including the first to install televisions in guest rooms to introduce the multi-hotel reservations system which later on centralized the whole reservations systems to open an airport hotel and it made history as its hotel became Leadership in Energy and Environmental Design and Green Seal certified.

    Hilton Hotels operates in 113 countries under 17 brands including Waldorf Astoria, L X R Hotels and Resorts, Conrad, Canopy by Hilton, DoubleTree, and Hilton Hotels and Resorts. Hilton expects to open 100 hotels across Africa and the Middle East in 2019 as part of its expansion program.

    Hilton prides itself as the best in hospitality service. The company intends to fulfill its mission of providing an exceptional experience for its guest through its wide-range of loyalty programs. With 100 years of history, Hilton has 3 billion guests in its 923,000 rooms across the globe and has earned a spot on the 2018 best workplace.

    Hilton also wants to drive social change through heightened corporate social responsibility.

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    Restaurant And Food Markets

    The first IKEA store opened in 1958 with a small cafe that transitioned into a full-blown restaurant in 1960 that, until 2011, sold branded Swedish prepared specialist foods, such as meatballs, packages of gravy, lingonberry jam, various biscuits and crackers, and salmon and fish roe spread. The new label has a variety of items including chocolates, meatballs, jams, pancakes, salmon and various drinks.

    Although the cafes primarily serve Swedish food, the menu varies based on the culture, food and location of each store. With restaurants in 38 countries, the menu will incorporate local dishes including shawarma in Saudi Arabia, poutine in Canada, macarons in France, and gelato in Italy. In Indonesia, the Swedish meatballs recipe is changed to accommodate the country’s halal requirements. Stores in Israel sell kosher food under rabbinical supervision. The kosher restaurants are separated into dairy and meat areas.

    In many locations, the IKEA restaurants open daily before the rest of the store and serve breakfast. All food products are based on Swedish recipes and traditions. Food accounts for 5% of IKEA’s sales.

    Alternative Smaller Store Formats

    This section may require cleanup to meet Wikipedia’s quality standards. The specific problem is: no need to report every new store. Please help improve this section if you can.

    The vast majority of IKEA stores are located outside of city centers, primarily because of land cost and traffic access. Several smaller store formats have been unsuccessfully tested in the past , or a “boutique” shop in Manhattan).

    New formats for full-size stores

    A new format for a full-size, city center store was introduced with the opening of the Manchester store, situated in Ashton-under-Lyne in 2006. Another store, in Coventry, opened in December 2007. The store had seven floors and a different flow from other IKEA stores however, it closed down in 2020 due to the site being deemed unsuitable for future business. IKEA’s Southampton store that opened in February 2009 is also in the city center and built in an urban style similar to the Coventry store. IKEA built these stores in response to UK government restrictions blocking retail establishment outside city centers.

    Adaptation to Japanese market

    Inner-city stores

    Small sized stores

    In 2022, another small-size store was opened inside Kings Mall , Hammersmith, in February, at 4,600 m2 , followed by a 9,400 m2 store inside Mall Taman Anggrek, Jakarta, which was opened on 7 April 2022.

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    Section : Load Balancing

    If you think about the two words, load and balance, you will start to get an intuition as to what this does in the world of computing. When a server simultaneously receives a lot of requests, it can slow down . After a point it may even fail .

    You can give the server more muscle power or you can add more servers . But now you got to work out how the income requests get distributed to the various servers – which requests get routed to which servers and how to ensure they don’t get overloaded too? In other words, how do you balance and allocate the request load?

    Enter load balancers. Since this article is an introduction to principles and concepts, they are, of necessity, very simplified explanations. A load balancer’s job is to sit between the client and server and work out how to distribute incoming request loads across multiple servers, so that the end user experience is consistently fast, smooth and reliable.

    So load balancers are like traffic managers who direct traffic. And they do this to maintain availability and throughput.

    When understanding where a load balancer is inserted in the system’s architecture, you can see that load balancers can be thought of as reverse proxies. But a load balancer can be inserted in other places too – between other exchanges – for example, between your server and your database.

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