95. [ title => “Disaster Recovery with AWS”,
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presenter => “Jeff Barr” ]
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[ title => “Introduction to DynamoDB”,
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96. [ title => “Disaster Recovery with AWS”,
date => “20120320”,
format => “webinar”,
presenter => “Jeff Barr” ]
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[ title => “Introduction to DynamoDB”,
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97. [ title => “Disaster Recovery with AWS”,
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Limited to 64 kB!
[ title => “Introduction to DynamoDB”,
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98. [ title => “Disaster Recovery with AWS”,
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Table
[ title => “Introduction to DynamoDB”,
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106. Table APIs
1.CreateTable
adds a new table to your account
2.UpdateTable
updates the provisioned throughput
3.DeleteTable
deletes a table and all of its items
107. 4. DescribeTable
returns table status, key schema, etc.
4. ListTables
returns tables associated with the
current account and endpoint
108. Item APIs
1. PutItem
creates a new item, or replaces an old
item with a new item (including all the
attributes). Can perform conditional Put.
2. GetItem
returns a set of Attributes for an item that
matches the primary key. Consistent or
eventually consistent reads.
109. 3. UpdateItem
PUT, ADD, DELETE attributes. Can also
put a new item + attributes. Can
perform conditional update.
4. DeleteItem
deletes a single item in a table by
primary key. Can perform conditional
delete.
110. Query & Scan APIs
1. Query
gets the values of one or more items and
its attributes by primary key
– Applicable only for tables with a composite
hash range key
111. 2. Scan
returns one or more items and its
attributes by performing a full scan of a
table
113. GetItem
– Returns a set of attributes for an item that matches
the primary key
Query
– Only works on a table with a composite hash, range
key
– Hash key = ‘xxxxx’ and a range key condition (EQ,
GT, LT, GE, LE, BEGINS_WITH, BETWEEN)
– Hash key = ‘xxxxx’ and no range key condition
– Count of items (that match a hash key value or
hash key + range condition)
– Top N / Bottom N items ( via ScanIndexForward =
T/F & Limit N)
– Paging via Limit N
114. BatchGetItem
– returns the attributes for multiple items from
multiple tables using their primary keys
Scan
– Scans a table from beginning to end and
apply filters
115. PutItem
– Add a new item, replace an item with a new item
– Can return all old values of an items attribute on
update
– Conditional: Insert a new item only if the PK does
not exist
UpdateItem
– Add, update or delete an attribute (other than the
PK)
– Increment an attribute (X = X + 10)
• Atomic increment and get
– Insert a new item and attributes
– Conditional: Insert a new attribute if it does not exist
116. DeleteItem
– Delete an item
– Return ALL_OLD (optional)
– Conditional: Delete an item if it exists or if it
has an expected attribute value
