<?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/'><id>tag:blogger.com,1999:blog-5404326412829312831.post8158224495764727390..comments</id><updated>2010-07-23T23:31:49.131+03:00</updated><category term='תשתיות נתונים'/><category term='scalability'/><category term='קוד פתוח'/><category term='ווידג&apos;טים'/><category term='שפות תכנות'/><category term='חברות עם סיפור טכנולוגי מעניין'/><category term='IT'/><category term='finalclass'/><category term='פיתוח ממשק משתמש'/><category term='קצת תאוריה'/><category term='אנשים - מתכנתים - ומה שביניהם'/><category term='תשתיות פיתוח'/><category term='ניהול מוצר'/><category term='קצת עלינו'/><category term='סתם עלינו'/><category term='סביבות פיתוח'/><category term='שירותים אינטרנטיים'/><category term='גאדג&apos;טים'/><category term='התעשיה ומה שמסביבה'/><category term='תאוריה מול פרקטיקה'/><title type='text'>Comments on רברס עם פלטפורמה: 056 - לא רק אס קיו אל - nosql</title><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://www.reversim.com/feeds/8158224495764727390/comments/default'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html'/><author><name>ReversTeam</name><uri>http://www.blogger.com/profile/02366198076795118274</uri><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='http://img2.blogblog.com/img/b16-rounded.gif'/></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>10</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-8068887798367146025</id><published>2010-07-23T23:31:49.131+03:00</published><updated>2010-07-23T23:31:49.131+03:00</updated><title type='text'>מצאתי כלי מדליק שמאפשר לסרוק רשתות שלמות ולאתר שרת...</title><content type='html'>מצאתי כלי מדליק שמאפשר לסרוק רשתות שלמות ולאתר שרתי SQL&lt;br /&gt;וגם מאפשר לנסות לפצח את הסיסמא שלהם במהירות&lt;br /&gt;(עובד גם ברשתות מקומיות וגם באינטרנט:-)&lt;br /&gt;זה הלינק:&lt;br /&gt;http://www.softpedia.com/get/Internet/Servers/Database-Utils/SQL-Locator.shtml&lt;br /&gt;&lt;br /&gt;מכירים כלים נוספים לסוגי SQL אחרים? (להשלמת ארגז הכלים - בעיקר לאבטחת מידע)</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/8068887798367146025'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/8068887798367146025'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1279917109131#c8068887798367146025' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='http://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-1610271893'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-6416160857780211243</id><published>2010-03-03T09:50:52.661+02:00</published><updated>2010-03-03T09:50:52.661+02:00</updated><title type='text'>Thanks Eishay, we&amp;#39;ve also answered the questio...</title><content type='html'>Thanks Eishay, we&amp;#39;ve also answered the question in podcast 60, on its way although not as knowledgeable as your answer...</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/6416160857780211243'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/6416160857780211243'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1267602652661#c6416160857780211243' title=''/><author><name>Ran Tavory</name><uri>http://www.blogger.com/profile/08860493178316395693</uri><email>noreply@blogger.com</email><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='OpenSocialUserId' value='06047089557379700900'/><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='http://static.flickr.com/56/154284666_dd28f3dc2a_s.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-772749480'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-4370141348670193616</id><published>2010-03-03T09:07:02.189+02:00</published><updated>2010-03-03T09:07:02.189+02:00</updated><title type='text'>Forgot to mention another nice feature coming to V...</title><content type='html'>Forgot to mention another nice feature coming to Voldemort which is the views. It enables the server to return a transformation of the data to the client. For example, if you already have large values on the server and one day you want only a small subset (Foo) of the value (Bar) to be return you can add a view which returns Foo which is a transformation of Bar.&lt;br /&gt;You can see it as a stored procedures you can write in Java which may reduce the network bandwidth, usually more expensive then CPU, of moving too much data on the wire.</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/4370141348670193616'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/4370141348670193616'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1267600022189#c4370141348670193616' title=''/><author><name>Eishay Smith</name><uri>http://www.blogger.com/profile/09443096006184006852</uri><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='30' height='32' src='http://2.bp.blogspot.com/_O9TJAb-LjDE/SdlzHG9KSlI/AAAAAAAAAYc/kCnqSgnk0es/S220/n646386018_2207361_5928583.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-466802792'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-6041381114536433190</id><published>2010-03-03T08:53:44.318+02:00</published><updated>2010-03-03T08:53:44.318+02:00</updated><title type='text'>אני משתמש בוולדמורט (עכשיו ובחברה הקודמת בה עבדתי)...</title><content type='html'>אני משתמש בוולדמורט (עכשיו ובחברה הקודמת בה עבדתי) אך לא יצא לי להשתמש בקסנדרה עדיין (מקווה להתקין בקרוב). סיכום קצר ממה שאני יודע:&lt;br /&gt;* Cassandra supports range queries under certain conditions, so if you need that then cassandra is better.&lt;br /&gt;* Voldemort versioning seems to be more capable; cassandra appears to do &amp;quot;last update wins&amp;quot; based purely on a timestamp to resolve inconsistency, which is OK for some applications, but lacks the flexibility to do client-side inconsistency resolution and updating values based on bad reads (sort of transactional). So what Voldemort is doing is more sophisticated, but for some applications the difference is probably not all that important. &lt;br /&gt;* Voldemort supports client and server routing . Cassandra does only server routing.  This would mean slightly better theoretical latency for &lt;br /&gt;Voldemort just from that. &lt;br /&gt;* Voldemort uses pluggable back-ends (BDB, MySQL, in memory readonly and more), many of them mature, so it offloads some of the risk whereas Cassandra implements everything. Each approach has advantages and disadvantages.&lt;br /&gt;* Cassandra only supports String keys while Voldemort support anything with a Serializer. I use Google&amp;#39;s Protobuf for heavy numeric datastractures which speeds up things a lot and simple strings or JSON for others.&lt;br /&gt;* Voldemort has a very simple API (no need for thrift etc)</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/6041381114536433190'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/6041381114536433190'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1267599224318#c6041381114536433190' title=''/><author><name>eishay.com</name><uri>http://www.eishay.com/</uri><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='http://img1.blogblog.com/img/openid16-rounded.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-1229327843'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-7119274824892700271</id><published>2010-01-29T21:53:57.277+02:00</published><updated>2010-01-29T21:53:57.277+02:00</updated><title type='text'>הי איל, מהיכרותי המועטה עם לורד וולדמורט, זהו דאטב...</title><content type='html'>הי איל, מהיכרותי המועטה עם לורד וולדמורט, זהו דאטביים מבוסס key-value בזמן שקסנדרה נותן מודל יותר עשיר הקרוי column oriented שזה משהו כמו key-multiple-values עם עוד כל מיני צ&amp;#39;יכלולים.  </content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/7119274824892700271'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/7119274824892700271'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1264794837277#c7119274824892700271' title=''/><author><name>Ran Tavory</name><uri>http://www.blogger.com/profile/08860493178316395693</uri><email>noreply@blogger.com</email><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='OpenSocialUserId' value='06047089557379700900'/><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='http://static.flickr.com/56/154284666_dd28f3dc2a_s.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-772749480'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-6111331902303707418</id><published>2010-01-26T18:23:45.882+02:00</published><updated>2010-01-26T18:23:45.882+02:00</updated><title type='text'>מעניין אותי מה היתרונות והחסרונות של Voldemort מול...</title><content type='html'>מעניין אותי מה היתרונות והחסרונות של Voldemort מול cassandra ?</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/6111331902303707418'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/6111331902303707418'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1264523025882#c6111331902303707418' title=''/><author><name>איל</name><uri>http://www.blogger.com/profile/10182547132560705040</uri><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='http://img2.blogblog.com/img/b16-rounded.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-238364866'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-1684986822348730912</id><published>2010-01-26T09:14:50.914+02:00</published><updated>2010-01-26T09:14:50.914+02:00</updated><title type='text'>כן, בתנור...</title><content type='html'>כן, בתנור...</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/1684986822348730912'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/1684986822348730912'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1264490090914#c1684986822348730912' title=''/><author><name>Ran Tavory</name><uri>http://www.blogger.com/profile/08860493178316395693</uri><email>noreply@blogger.com</email><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='OpenSocialUserId' value='06047089557379700900'/><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='http://static.flickr.com/56/154284666_dd28f3dc2a_s.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-772749480'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-1302788292590914954</id><published>2010-01-26T09:08:23.942+02:00</published><updated>2010-01-26T09:08:23.942+02:00</updated><title type='text'>היה מאוד מעניין. מתוכנן המשך?
שימי</title><content type='html'>היה מאוד מעניין. מתוכנן המשך?&lt;br /&gt;שימי</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/1302788292590914954'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/1302788292590914954'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1264489703942#c1302788292590914954' title=''/><author><name>Anonymous</name><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='http://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-940632885'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-2399792306166024202</id><published>2010-01-25T14:47:43.292+02:00</published><updated>2010-01-25T14:47:43.292+02:00</updated><title type='text'>עומר, מה שאתה אומר הוא נכון מאוד. הקלטנו היום פרק ...</title><content type='html'>עומר, מה שאתה אומר הוא נכון מאוד. הקלטנו היום פרק המשך באותו נושא.&lt;br /&gt;תודה על הוידאו של קון מיוטיוב - עבדתי איתו אבל לא ידעתי על הוידאו שלו</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/2399792306166024202'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/2399792306166024202'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1264423663292#c2399792306166024202' title=''/><author><name>Ran Tavory</name><uri>http://www.blogger.com/profile/08860493178316395693</uri><email>noreply@blogger.com</email><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='OpenSocialUserId' value='06047089557379700900'/><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='32' height='32' src='http://static.flickr.com/56/154284666_dd28f3dc2a_s.jpg'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-772749480'/></entry><entry><id>tag:blogger.com,1999:blog-5404326412829312831.post-1214646100370232646</id><published>2010-01-25T14:41:15.628+02:00</published><updated>2010-01-25T14:41:15.628+02:00</updated><title type='text'>לא מעט מפתרונות ה-noSQL מאפשרים גידול של הנתונים ע...</title><content type='html'>לא מעט מפתרונות ה-noSQL מאפשרים גידול של הנתונים על ידי חלוקת הנתונים על פני מספר שרתים באופן דומה ל-sharding עם hash function כפי שציינתם שניתן לעשות עם מסדי נתונים רלצניוניים קלאסיים.&lt;br /&gt;היתרון המשמעותי של פתרונות ה-noSQL הוא בעובדה שהם נכתבו לצורך עבודה זו - כלומר התכנון הפנימי שלהם נועד לעבודה על פני שרתים רבים. הליבה של מסדי הנתונים הרלציוניים הקלאסיים נכתבה לפני 20 שנה, והם לא תוכננו לסוג כזה של עבודה.&lt;br /&gt;היתרון השני הוא שמרבית הפתרונות הפופולריים היום נתמכים על קוד פתוח, כך שעלות השימוש בהם נמוכה.&lt;br /&gt;מצד שני, הם דורשים כתיבת קוד נוסף כיוון שהפתרונות הללו מספקים פונקציונאליות בסיסית יותר. אם אתם מנוסים בשימוש עם מסדי נתונים רלציוניים, אתם יכולים להשיג תוצאות משמעותיות עם הפתרונות הקיימים. אתם יכולים לראות את ההרצאה של youtube:&lt;br /&gt;http://www.youtube.com/watch?v=ZW5_eEKEC28</content><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/1214646100370232646'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/5404326412829312831/8158224495764727390/comments/default/1214646100370232646'/><link rel='alternate' type='text/html' href='http://www.reversim.com/2010/01/056-nosql.html?showComment=1264423275628#c1214646100370232646' title=''/><author><name>עומר</name><uri>http://omergertel.com</uri><email>noreply@blogger.com</email><gd:image xmlns:gd='http://schemas.google.com/g/2005' rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='http://img1.blogblog.com/img/blank.gif'/></author><thr:in-reply-to xmlns:thr='http://purl.org/syndication/thread/1.0' href='http://www.reversim.com/2010/01/056-nosql.html' ref='tag:blogger.com,1999:blog-5404326412829312831.post-8158224495764727390' source='http://www.blogger.com/feeds/5404326412829312831/posts/default/8158224495764727390' type='text/html'/><gd:extendedProperty xmlns:gd='http://schemas.google.com/g/2005' name='blogger.itemClass' value='pid-775868422'/></entry></feed>
