Know Everything About Solana Program Library

Solana
is
a
powerful
alternative
to
most
of
the

layer
1
blockchain
networks
running
in
the

web3
ecosystem
right
now.
It
is
a
high-speed
programmable
blockchain
with
the
advantages
of
interoperability
and
scalability
for
creating
and
deploying

decentralized
applications.
One
of
the
common
factors
that
you
may
come
across
while
learning
about
Solana
is
the
Solana
program
library
guide,
as
SPL
is
one
of
the
major
components
for
operations
of
Solana
blockchain.

The
Solana
Program
Library,
or
SPL,
is
a
comprehensive
collection
of
libraries
and
tools
tailored
for
supporting

dApp
development
on
Solana
blockchain.
In
technical
terms,
the
SPL
is
a
collection
of
on-chain
programs
that
target
the
Sealevel
parallel
runtime.
The
on-chain
programs
go
through
testing
with
respect
to
the
Solana
implementation
of
Sealevel.

Solana
maintains
the
Solana
Program
Library,
or
SPL,
as
a
comprehensive
and
dedicated
documentation
library.
The
answers
for
‘What
is
Solana
Program
Library’
would
focus
on
how
SPL
includes
all
the
pre-compiled,
deployed,
and
optimized
programs
on
Solana
blockchain.
It
is
important
to
note
that

smart
contracts
on
Solana
blockchain
take
the
identity
of
programs.
Let
us
learn
more
about
the
Solana
Program
Library
and
SPL
token
program
in
the
following
post.

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your
identity
as
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What
are
Solana
Programs?

The
first
thing
you
need
to
learn
Solana
program
library
is
a
detailed
understanding
of
Solana
programs.
Solana
programs
are
automatically
executable
code
that
you
can
find
in
buffer
storage.
In
Solana
blockchain,
accounts
serve
as
the
buffer
storage
for
Solana
programs.
On
top
of
it,
users
can
execute
programs
through
transactions
just
like
smart
contracts
on

Ethereum
or
other
programmable

blockchains.

However,
Solana
has
a
resource-efficient
approach
for
smart
contract
execution
compared
to
other
programmable

blockchain
networks.
In
Ethereum,
smart
contracts
store
the
smart
contract
program
and
its
state
together.
On
the
other
hand,
Solana
uses
a
stateless
program
model
and
accounts
to
help
store
data
and
programs.

Significance
of
Accounts
in
Solana

The
guides
for
understanding
Solana
programs
would
be
incomplete
without
a
description
of
accounts
in
Solana.
You
can
learn
more
about
the
Solana
SPL
token
program
by
discovering
the
meaning
of
accounts
in
Solana.
Accounts
are
a
type
of
record
in
the
Solana
ledger
that
can
hold
data
or
also
serve
as
executable
programs.

If
you
think
that
Solana
is
a
database,
then
the
accounts
in
Solana
serve
as
rows.
In
addition,
pub
keys
serve
as
IDs,
and
the
value
in
the
rows
points
to
the
information
you
can
find
in
the
account.
The
information
in
the
rows
can
be
found
in
the
form
of
programs
or
smart
contract
codes
and
the
data
or
state
of
the
program.

You
can
identify
an
account
with
the
help
of
a
unique
Public
Key,
which
is
256
bytes
in
size.
Solana
offers
logical
separation
between
the
code
and
data
associated
with
it,
thereby
leading
to
the
creation
of
two
distinct
variants
of
accounts.
The
common
types
of
accounts
you
can
find
in
a
Solana
program
library
example
include
executable
and
non-executable
accounts.
Each
type
of
account
has
distinct
traits,
which
makes
them
invaluable
additions
to
the
Solana
ecosystem.

Executable
accounts
are
accounts
that
store
only
the
immutable
smart
contract
or
program
code
on
Solana.

On
the
other
hand,
non-executable
accounts
also
store
the
data
that
the
related
program
would
need.
For
example,
it
would
store
variables,
states,
and
assets
of
the
program.
Anyone
can
read
the
data
in
non-executable
accounts.
However,
only
the
owner
of
the
program
has
the
right
to
modify
data
in
non-executable
accounts.
A
comprehensive
Solana
program
library
guide
could
also
highlight
the
fact
that
only
validator
nodes
could
maintain
the
accounts.

The
validator
nodes
would
charge
a
maintenance
cost
known
as
‘Rent’
for
offering
memory
space
to
store
the
required
information.
Users
can
pay
the
‘Rent’
in
the
form
of
lamports,
which
are
the
fractional
denomination
of
SOL,
the
native
token
of
Solana
blockchain.
At
this
point,
you
must
learn
about
Sealevel
Parallel
Runtime
system
that
helps
in
maintaining
the
Solana
program
code
and
state
data
separately.

Excited
to
learn
about
the
fundamentals
of
Solana
and
Solana
smart
contracts
development,
Enroll
now
in
the Solana
Development
Course.

Importance
of
Sealevel
Parallel
Runtime

Sealevel
Parallel
Runtime
is
the
most
important
component
in
the
Solana
ecosystem.
It
is
Solana’s
unique
approach
to
implementing
a
parallel
transaction
processing
system.
Sealevel
parallel
runtime
is
a
valuable
component
for
Solana
SPL
token
program
execution
and
powers
the
Solana
Program
Library.

In
the
case
of
traditional
single-threaded
blockchains
such
as
Ethereum,
processing
transactions
one
at
a
time
can
help
avoid
concurrency.
It
is
important
to
note
that

Ethereum
smart
contracts
are
stateful
in
nature,
which
implies
that
the
state
and
the
code
can
be
combined
in
the
same
contract.

Sealevel
Parallel
Runtime
can
help
Solana
in
processing
thousands
of
transactions
in
parallel
without
any
conflicts.
Solana
can
leverage
multiple
validator
cores
and
execute
almost
50,000
TPS
along
with
a
400
millisecond
block
time.
The
tasteless
nature
of
transaction
instructions
ensures
that
they
can
decide
the
account
data
for
modification.
Therefore,
Solana
programs
that
do
not
have
the
same
account
data
could
run
simultaneously.

Notable
Variants
of
Solana
Programs

The
journey
to
learn
Solana
program
library
fundamentals
also
involves
familiarizing
with
the
notable
variants
of
Solana
programs.
You
can
find
two
variants
of
programs
in
the
Solana
ecosystem,
such
as
native
and
on-chain
programs.
Let
us
learn
more
about
the
two
variants
of
Solana
programs
in
detail.

• Native
  Programs

Native
programs
are
useful
for
implementation
of
core
functionalities
of
Solana
network.
The
core
functionalities
of
the
Solana
network
include
creation
of
new
accounts,
enforcement
of
the
rules
of
Solana
network,
management
of
allocation
of
account
storage,
and
transaction
processing.
Native
programs
are
integral
components
of
Solana’s
core
blockchain
model.

Low-level
languages
such
as
C/C++
and

Rust
help
in
creating
native
programs.
The
native
programs
are
optimized
to
achieve
better
security
and
performance,
and
any
program
or
user
can
call
native
programs.
On
the
other
hand,
users
cannot
directly
call
or
access
a
kernel-level
program
in
your
operating
system.

Updating
the
native
programs
could
happen
only
as
a
result
of
the
cluster
upgrades
or
core
blockchain
upgrades.
The
upgrades
could
focus
on
improving
performance,
adding
new
features,
and
fixing
bugs.
Every
Solana
program
library
example
could
help
you
understand
how
native
programs
could
help
in
securing
the
validator.
Some
of
the
notable
variants
of
native
programs
on
Solana
include
system
programs,
stake
programs,
and
Berkeley
Packet
Filter
or
BPF
programs.

System
Programs

The
primary
functionality
of
system
programs
revolves
around
creation
of
new
accounts,
assignment
of
account
ownership,
and
transferring
SOL
tokens
between
accounts.
In
addition,
system
programs
are
useful
tools
for
performing
many
other
account
management
tasks
in
the
Solana
ecosystem.

Stake
Program

The
stake
programs
in
Solana
ecosystem
can
help
in
management
of
the
process
for
staking
SOL
tokens
on
Solana
blockchain.

Berkeley
Packet
Filter

The
Berkeley
Packet
Filter
or
BPF
programs
are
useful
for
managing
the
process
of
deploying
and
implementing
upgrades
and
the
on-chain
execution
of
programs.

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to
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web3
application
architecture?
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Application
Development
Course

• On-chain
  Programs

The
next
important
category
of
programs
in
the
Solana
ecosystem
points
to
on-chain
programs.
Any
Solana
program
library
guide
would
be
incomplete
without
mentioning
the
details
of
on-chain
programs.
The
on-chain
programs
are
user-scripted
programs
deployed
directly
on
Solana
blockchain.
Some
notable
examples
of
on-chain
programs
include
dApps,

crypto
exchanges,
test
smart
contracts,

multi-sig
wallet
implementation,
and
other
generic
programs.

As
compared
to
native
programs,
on-chain
programs
are
not
a
part
of
the
core
of
the
Solana
cluster.
On
the
contrary,
they
are
custom
programs
developed
and
deployed
directly
on
Solana
blockchain.
On-chain
programs
are
not
the
essential
requirements
for
operations
of
Solana
blockchain.

The
programs
are
developed
over
the
core
infrastructure
developed
by
the
native
programs
and
help
in
creating
a
broad
range
of
applications
or
services
on
Solana.
Separate
data
accounts
are
required
for
storing
the
data
with
which
the
programs
interact.
The
data
could
be
passed
as
references
through
instructions,
and
the
account
owner
could
help
upgrade
the
program
data.

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Discovering
the
Fundamentals
of
Solana
Program
Library

The
responses
to
“What
is
Solana
Program
Library”
are
an
important
highlight
in
the
guides
on
SPL
and
its
importance
in
Solana
ecosystem.
Solana
Program
Library
is
a
collection
of
modular,
pre-written
programs
that
can
help
in

building
decentralized
applications
on
Solana
blockchain.
SPL
can
ensure
that
developers
can
leverage
a
collection
of
modular
and
reusable
components
for
creating
dApps.
The
components
of
SPL
can
be
integrated
directly
into
the
applications
on
Solana
blockchain,
thereby
reducing
the
necessity
for
writing
complex
code
from
scratch.

SPL
can
help
developers
in
creating
dApps
by
leveraging
a
‘building
block’
approach.
In
this
unique
approach,
every
component
can
be
integrated
easily
into
the
decentralized
application.
Another
important
highlight
of
SPL
is
the
facility
of
multiple
on-chain
generic
programs.
In
addition,
you
can
also
find
Solana
SPL
token
program
alongside
its
different
variations.
The
token
program
and
its
variations
can
be
incorporated
easily
into
dApps
created
on
Solana
blockchain.
What
are
the
special
highlights
of
the
SPL
token
program?

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Core
Functions
of
the
SPL
Token
Program

The
noticeable
aspects
you
must
focus
on
to
learn
Solana
program
library
fundamentals
would
also
include
the
SPL
token
program.
The
SPL
token
program
serves
as
a
generic
implementation
for

non-fungible
and
fungible
tokens
on
Solana
blockchain.
It
offers
an
interface
alongside
detailed
implementation
that
allows
developers
to
create
their
own
tokens.
The
code
for
SPL
token
program
is
written
natively
in
Rust
and
also
leverages
the
benefits
of
auto-generated
bindings
in
JavaScript
and
C.
You
can
access
the
source
code
for
the
SPL
token
program
in
the
SPL
Github
repository.

You
can
understand
the
difference
between
Solana
SPL
token
program
and

ERC-20
token
program
to
learn
more
about
their
usability.
The
ERC-20
token
program
has
a
different
working
mechanism
than
Ethereum
ERC-20
contracts.
For
example,
you
can
try
to
publish
three
different
tokens
on
Ethereum
blockchain
by
deploying
three
different
contracts.
Every
token
contract
would
maintain
track
of
the
balances
and
transfers
associated
with
the
contract.

On
the
other
hand,
you
don’t
have
to
deploy
three
different
token
programs
on
Solana.
You
can
only
use
one
generic
token
program
that
would
work
on
different
types
of
accounts.
The
mint
address
supports
the
unique
identification
of
the
token
type.
In
addition,
users
can
pass
the
information
as
arguments
to
single
static
ERC-20
program
instances
deployed
on
Solana
blockchain.

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to
develop
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understanding
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Course.

Important
Components
of
Solana
SPL
Library

Developers
who
want
to
learn
the
answers
to
“What
is
Solana
Program
Library?”
must
identify
the
important
components
of
SPL.
Here
are
some
of
the
most
noticeable
components
of
the
Solana
Program
Library.

• SPL
  Token
  is
  an
  important
  standard
  for
  representation
  of
  fungible
  and
  
  non-fungible
  tokens
  on
  Solana
  blockchain.
• SPL
  Token
  Swap
  program
  can
  help
  ensure
  token
  exchange
  on
  Solana
  blockchain.
• The
  SPL
  Token
  Registry
  program
  helps
  in
  maintenance
  of
  a
  list
  of
  token
  mints
  and
  the
  associated
  metadata
  that
  helps
  in
  effective
  discovery
  of
  information
  about
  tokens
  on
  Solana
  blockchain.
• Another
  notable
  highlight
  in
  a
  Solana
  program
  library
  example
  is
  the
  SPL
  Associated
  Token
  Account.
  It
  is
  a
  Solana
  account
  related
  to
  a
  particular
  token
  mint
  and
  plays
  a
  crucial
  role
  in
  simplifying
  the
  management
  of
  token
  ownership.
• The
  SPL
  Memo
  program
  helps
  attach
  memos
  to
  a
  transaction,
  which
  can
  provide
  additional
  context
  or
  information
  about
  the
  transaction.
• SPL
  Vault
  program
  helps
  in
  management
  of
  DeFi
  vaults
  on
  Solana
  blockchain
  tailored
  with
  strategic
  approaches
  to
  optimize
  yield
  on
  deposited
  assets.
• The
  SPL
  Stake
  Pool
  program
  in
  Solana
  Program
  Library
  helps
  in
  effective
  management
  of
  staking
  pools
  on
  Solana
  network.
• SPL
  Oracles
  are
  programs
  that
  can
  offer
  external
  data
  to
  smart
  contracts
  through
  integration
  of
  external
  data
  feeds
  in
  Solana-based
  applications.

Preparing
for
a
Solana
Developer
Interview?
Here’re
the
top

Solana
Interview
Questions
And
Answers you
should
go
through
to
crack
the
interview.

Conclusion

The
introduction
to
Solana
Program
Library
or
SPL
in
Solana
ecosystem
helps
in
identifying
the
significance
of
SPL.
The
Solana
Program
Library
includes
pre-defined,
compiled,
and
deployed
programs
on

Solana
blockchain.
Anyone
who
wants
to
learn
Solana
Program
Library
fundamentals
must
go
through
the
details
of
programs
and
accounts
on
Solana
blockchain.
In
addition,
you
must
pay
attention
to
the
use
of
SPL
Token
program
and
other
components
of
Solana
Program
Library
to
understand
its
functionality.
Learn
more
about
the
fundamental
concepts
of
Solana
blockchain
with
comprehensive
professional
training
resources
right
now.

*Disclaimer:
The
article
should
not
be
taken
as,
and
is
not
intended
to
provide
any
investment
advice.
Claims
made
in
this
article
do
not
constitute
investment
advice
and
should
not
be
taken
as
such.
101
Blockchains
shall
not
be
responsible
for
any
loss
sustained
by
any
person
who
relies
on
this
article.
Do
your
own
research!